Perinatal aspects on the covid-19 pandemic: a practical resource for perinatal–neonatal specialists
Identifieur interne : 000547 ( Pmc/Corpus ); précédent : 000546; suivant : 000548Perinatal aspects on the covid-19 pandemic: a practical resource for perinatal–neonatal specialists
Auteurs : Francis Mimouni ; Satyan Lakshminrusimha ; Stephen A. Pearlman ; Tonse Raju ; Patrick G. Gallagher ; Joseph MendlovicSource :
- Journal of Perinatology [ 0743-8346 ] ; 2020.
Abstract
Little is known about the perinatal aspects of COVID-19.
To summarize available evidence and provide perinatologists/neonatologists with tools for managing their patients.
Analysis of available literature on COVID-19 using Medline and Google scholar.
From scant data: vertical transmission from maternal infection during the third trimester probably does not occur or likely it occurs very rarely. Consequences of COVID-19 infection among women during early pregnancy remain unknown. We cannot conclude if pregnancy is a risk factor for more severe disease in women with COVID-19. Little is known about disease severity in neonates, and from very few samples, the presence of SARS-CoV-2 has not been documented in human milk. Links to websites of organizations with updated COVID-19 information are provided. Infographics summarize an approach to the pregnant woman or neonate with suspected or confirmed COVID-19.
As the pandemic continues, more data will be available that could lead to changes in current knowledge and recommendations.
Url:
DOI: 10.1038/s41372-020-0665-6
PubMed: 31439918
PubMed Central: 7147357
Links to Exploration step
PMC:7147357Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Perinatal aspects on the covid-19 pandemic: a practical resource for perinatal–neonatal specialists</title><author><name sortKey="Mimouni, Francis" sort="Mimouni, Francis" uniqKey="Mimouni F" first="Francis" last="Mimouni">Francis Mimouni</name><affiliation><nlm:aff id="Aff1"><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 0470 7791</institution-id><institution-id institution-id-type="GRID">grid.415593.f</institution-id><institution>Department of Neonatology,</institution><institution>Shaare Zedek Medical Center,</institution></institution-wrap>Jerusalem, Israel</nlm:aff></affiliation><affiliation><nlm:aff id="Aff2"><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 1937 0546</institution-id><institution-id institution-id-type="GRID">grid.12136.37</institution-id><institution>Sackler School of Medicine,</institution></institution-wrap>Tel Aviv, Israel</nlm:aff></affiliation></author><author><name sortKey="Lakshminrusimha, Satyan" sort="Lakshminrusimha, Satyan" uniqKey="Lakshminrusimha S" first="Satyan" last="Lakshminrusimha">Satyan Lakshminrusimha</name><affiliation><nlm:aff id="Aff3"><institution-wrap><institution-id institution-id-type="GRID">grid.478053.d</institution-id><institution>UC Davis Children’s Hospital,</institution></institution-wrap>Sacramento, CA USA</nlm:aff></affiliation></author><author><name sortKey="Pearlman, Stephen A" sort="Pearlman, Stephen A" uniqKey="Pearlman S" first="Stephen A." last="Pearlman">Stephen A. Pearlman</name><affiliation><nlm:aff id="Aff4"><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 0439 9493</institution-id><institution-id institution-id-type="GRID">grid.414314.7</institution-id><institution>Christiana Care,</institution></institution-wrap>Newark, DE USA</nlm:aff></affiliation><affiliation><nlm:aff id="Aff5"><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 2166 5843</institution-id><institution-id institution-id-type="GRID">grid.265008.9</institution-id><institution>Sidney Kimmel Medical College,</institution><institution>Thomas Jefferson University,</institution></institution-wrap>Newark, DE USA</nlm:aff></affiliation></author><author><name sortKey="Raju, Tonse" sort="Raju, Tonse" uniqKey="Raju T" first="Tonse" last="Raju">Tonse Raju</name><affiliation><nlm:aff id="Aff6"><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 0421 5525</institution-id><institution-id institution-id-type="GRID">grid.265436.0</institution-id><institution>School of Medicine,</institution><institution>Uniformed Services University of Health Sciences,</institution></institution-wrap>Bethesda, MD USA</nlm:aff></affiliation></author><author><name sortKey="Gallagher, Patrick G" sort="Gallagher, Patrick G" uniqKey="Gallagher P" first="Patrick G." last="Gallagher">Patrick G. 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Pearlman</name><affiliation><nlm:aff id="Aff4"><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 0439 9493</institution-id><institution-id institution-id-type="GRID">grid.414314.7</institution-id><institution>Christiana Care,</institution></institution-wrap>Newark, DE USA</nlm:aff></affiliation><affiliation><nlm:aff id="Aff5"><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 2166 5843</institution-id><institution-id institution-id-type="GRID">grid.265008.9</institution-id><institution>Sidney Kimmel Medical College,</institution><institution>Thomas Jefferson University,</institution></institution-wrap>Newark, DE USA</nlm:aff></affiliation></author><author><name sortKey="Raju, Tonse" sort="Raju, Tonse" uniqKey="Raju T" first="Tonse" last="Raju">Tonse Raju</name><affiliation><nlm:aff id="Aff6"><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 0421 5525</institution-id><institution-id institution-id-type="GRID">grid.265436.0</institution-id><institution>School of Medicine,</institution><institution>Uniformed Services University of Health Sciences,</institution></institution-wrap>Bethesda, MD USA</nlm:aff></affiliation></author><author><name sortKey="Gallagher, Patrick G" sort="Gallagher, Patrick G" uniqKey="Gallagher P" first="Patrick G." last="Gallagher">Patrick G. Gallagher</name><affiliation><nlm:aff id="Aff7"><institution-wrap><institution-id institution-id-type="ISNI">0000000419368710</institution-id><institution-id institution-id-type="GRID">grid.47100.32</institution-id><institution>Yale University School of Medicine,</institution></institution-wrap>New Haven, CT USA</nlm:aff></affiliation></author><author><name sortKey="Mendlovic, Joseph" sort="Mendlovic, Joseph" uniqKey="Mendlovic J" first="Joseph" last="Mendlovic">Joseph Mendlovic</name><affiliation><nlm:aff id="Aff8"><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 0470 7791</institution-id><institution-id institution-id-type="GRID">grid.415593.f</institution-id><institution>Shaare Zedek Medical Center,</institution></institution-wrap>Jerusalem, Israel</nlm:aff></affiliation><affiliation><nlm:aff id="Aff9"><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 1937 0546</institution-id><institution-id institution-id-type="GRID">grid.12136.37</institution-id><institution>Recanati Business School,</institution><institution>Tel Aviv University,</institution></institution-wrap>Tel Aviv, Israel</nlm:aff></affiliation></author></analytic><series><title level="j">Journal of Perinatology</title><idno type="ISSN">0743-8346</idno><idno type="eISSN">1476-5543</idno><imprint><date when="2020">2020</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Background</title><p id="Par1">Little is known about the perinatal aspects of COVID-19.</p></sec><sec><title>Objective</title><p id="Par02">To summarize available evidence and provide perinatologists/neonatologists with tools for managing their patients.</p></sec><sec><title>Methods</title><p id="Par03">Analysis of available literature on COVID-19 using Medline and Google scholar.</p></sec><sec><title>Results</title><p id="Par04">From scant data: vertical transmission from maternal infection during the third trimester probably does not occur or likely it occurs very rarely. Consequences of COVID-19 infection among women during early pregnancy remain unknown. We cannot conclude if pregnancy is a risk factor for more severe disease in women with COVID-19. Little is known about disease severity in neonates, and from very few samples, the presence of SARS-CoV-2 has not been documented in human milk. Links to websites of organizations with updated COVID-19 information are provided. Infographics summarize an approach to the pregnant woman or neonate with suspected or confirmed COVID-19.</p></sec><sec><title>Conclusions</title><p id="Par05">As the pandemic continues, more data will be available that could lead to changes in current knowledge and recommendations.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Menachery, Vd" uniqKey="Menachery V">VD Menachery</name></author><author><name sortKey="Yount, Bl" uniqKey="Yount B">BL Yount</name></author><author><name sortKey="Debbink, K" uniqKey="Debbink K">K Debbink</name></author><author><name sortKey="Agnihothram, S" uniqKey="Agnihothram S">S Agnihothram</name></author><author><name sortKey="Gralinski, Le" uniqKey="Gralinski L">LE Gralinski</name></author><author><name sortKey="Plante, Ja" uniqKey="Plante J">JA Plante</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Chan Yeung, M" uniqKey="Chan Yeung M">M Chan-Yeung</name></author><author><name sortKey="Xu, Rh" uniqKey="Xu R">RH Xu</name></author></analytic></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct><analytic><author><name sortKey="Huang, C" uniqKey="Huang C">C Huang</name></author><author><name sortKey="Wang, Y" uniqKey="Wang Y">Y Wang</name></author><author><name sortKey="Li, X" uniqKey="Li X">X Li</name></author><author><name sortKey="Ren, L" uniqKey="Ren L">L Ren</name></author><author><name sortKey="Zhao, J" uniqKey="Zhao J">J Zhao</name></author><author><name sortKey="Hu, Y" uniqKey="Hu Y">Y Hu</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Wang, X" uniqKey="Wang X">X Wang</name></author><author><name sortKey="Zhang, X" uniqKey="Zhang X">X Zhang</name></author><author><name sortKey="He, J" uniqKey="He J">J He</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Chen, H" uniqKey="Chen H">H Chen</name></author><author><name sortKey="Guo, J" uniqKey="Guo J">J Guo</name></author><author><name sortKey="Wang, C" uniqKey="Wang C">C Wang</name></author><author><name sortKey="Luo, F" uniqKey="Luo F">F Luo</name></author><author><name sortKey="Yu, X" uniqKey="Yu X">X Yu</name></author><author><name sortKey="Zhang, W" uniqKey="Zhang W">W Zhang</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Zhang, L" uniqKey="Zhang L">L Zhang</name></author><author><name sortKey="Jiang, Y" uniqKey="Jiang Y">Y Jiang</name></author><author><name sortKey="Wei, M" uniqKey="Wei M">M Wei</name></author><author><name sortKey="Cheng, Bh" uniqKey="Cheng B">BH Cheng</name></author><author><name sortKey="Zhou, Xc" uniqKey="Zhou X">XC Zhou</name></author><author><name sortKey="Li, J" uniqKey="Li J">J Li</name></author></analytic></biblStruct><biblStruct></biblStruct><biblStruct><analytic><author><name sortKey="Chen, S" uniqKey="Chen S">S Chen</name></author><author><name sortKey="Huang, B" uniqKey="Huang B">B Huang</name></author><author><name sortKey="Luo, Dj" uniqKey="Luo D">DJ Luo</name></author></analytic></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct><analytic><author><name sortKey="Mathad, Js" uniqKey="Mathad J">JS Mathad</name></author><author><name sortKey="Gupta, A" uniqKey="Gupta A">A Gupta</name></author></analytic></biblStruct><biblStruct></biblStruct><biblStruct><analytic><author><name sortKey="Zhu, H" uniqKey="Zhu H">H Zhu</name></author><author><name sortKey="Wang, L" uniqKey="Wang L">L Wang</name></author><author><name sortKey="Fang, C" uniqKey="Fang C">C Fang</name></author><author><name sortKey="Peng, S" uniqKey="Peng S">S Peng</name></author><author><name sortKey="Zhang, L" uniqKey="Zhang L">L Zhang</name></author><author><name sortKey="Chang, G" uniqKey="Chang G">G Chang</name></author></analytic></biblStruct><biblStruct></biblStruct></listBibl></div1></back></TEI><pmc article-type="review-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">J Perinatol</journal-id><journal-id journal-id-type="iso-abbrev">J Perinatol</journal-id><journal-title-group><journal-title>Journal of Perinatology</journal-title></journal-title-group><issn pub-type="ppub">0743-8346</issn><issn pub-type="epub">1476-5543</issn><publisher><publisher-name>Nature Publishing Group US</publisher-name><publisher-loc>New York</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">31439918</article-id><article-id pub-id-type="pmc">7147357</article-id><article-id pub-id-type="publisher-id">665</article-id><article-id pub-id-type="doi">10.1038/s41372-020-0665-6</article-id><article-categories><subj-group subj-group-type="heading"><subject>Perspective</subject></subj-group></article-categories><title-group><article-title>Perinatal aspects on the covid-19 pandemic: a practical resource for perinatal–neonatal specialists</article-title></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name><surname>Mimouni</surname><given-names>Francis</given-names></name><address><email>fbmimouni@gmail.com</email></address><xref ref-type="aff" rid="Aff1">1</xref><xref ref-type="aff" rid="Aff2">2</xref></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">http://orcid.org/0000-0001-6098-2155</contrib-id><name><surname>Lakshminrusimha</surname><given-names>Satyan</given-names></name><address><email>slakshmi@ucdavis.edu</email></address><xref ref-type="aff" rid="Aff3">3</xref></contrib><contrib contrib-type="author"><name><surname>Pearlman</surname><given-names>Stephen A.</given-names></name><xref ref-type="aff" rid="Aff4">4</xref><xref ref-type="aff" rid="Aff5">5</xref></contrib><contrib contrib-type="author"><name><surname>Raju</surname><given-names>Tonse</given-names></name><xref ref-type="aff" rid="Aff6">6</xref></contrib><contrib contrib-type="author"><name><surname>Gallagher</surname><given-names>Patrick G.</given-names></name><xref ref-type="aff" rid="Aff7">7</xref></contrib><contrib contrib-type="author"><name><surname>Mendlovic</surname><given-names>Joseph</given-names></name><xref ref-type="aff" rid="Aff8">8</xref><xref ref-type="aff" rid="Aff9">9</xref></contrib><aff id="Aff1"><label>1</label><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 0470 7791</institution-id><institution-id institution-id-type="GRID">grid.415593.f</institution-id><institution>Department of Neonatology,</institution><institution>Shaare Zedek Medical Center,</institution></institution-wrap>Jerusalem, Israel</aff><aff id="Aff2"><label>2</label><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 1937 0546</institution-id><institution-id institution-id-type="GRID">grid.12136.37</institution-id><institution>Sackler School of Medicine,</institution></institution-wrap>Tel Aviv, Israel</aff><aff id="Aff3"><label>3</label><institution-wrap><institution-id institution-id-type="GRID">grid.478053.d</institution-id><institution>UC Davis Children’s Hospital,</institution></institution-wrap>Sacramento, CA USA</aff><aff id="Aff4"><label>4</label><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 0439 9493</institution-id><institution-id institution-id-type="GRID">grid.414314.7</institution-id><institution>Christiana Care,</institution></institution-wrap>Newark, DE USA</aff><aff id="Aff5"><label>5</label><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 2166 5843</institution-id><institution-id institution-id-type="GRID">grid.265008.9</institution-id><institution>Sidney Kimmel Medical College,</institution><institution>Thomas Jefferson University,</institution></institution-wrap>Newark, DE USA</aff><aff id="Aff6"><label>6</label><institution-wrap><institution-id institution-id-type="ISNI">0000 0001 0421 5525</institution-id><institution-id institution-id-type="GRID">grid.265436.0</institution-id><institution>School of Medicine,</institution><institution>Uniformed Services University of Health Sciences,</institution></institution-wrap>Bethesda, MD USA</aff><aff id="Aff7"><label>7</label><institution-wrap><institution-id institution-id-type="ISNI">0000000419368710</institution-id><institution-id institution-id-type="GRID">grid.47100.32</institution-id><institution>Yale University School of Medicine,</institution></institution-wrap>New Haven, CT USA</aff><aff id="Aff8"><label>8</label><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 0470 7791</institution-id><institution-id institution-id-type="GRID">grid.415593.f</institution-id><institution>Shaare Zedek Medical Center,</institution></institution-wrap>Jerusalem, Israel</aff><aff id="Aff9"><label>9</label><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 1937 0546</institution-id><institution-id institution-id-type="GRID">grid.12136.37</institution-id><institution>Recanati Business School,</institution><institution>Tel Aviv University,</institution></institution-wrap>Tel Aviv, Israel</aff></contrib-group><pub-date pub-type="epub"><day>10</day><month>4</month><year>2020</year></pub-date><fpage>1</fpage><lpage>7</lpage><history><date date-type="received"><day>23</day><month>3</month><year>2020</year></date><date date-type="rev-recd"><day>25</day><month>3</month><year>2020</year></date><date date-type="accepted"><day>25</day><month>3</month><year>2020</year></date></history><permissions><copyright-statement>© Springer Nature America, Inc. 2020</copyright-statement><license><license-p>This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic.</license-p></license></permissions><abstract id="Abs1"><sec><title>Background</title><p id="Par1">Little is known about the perinatal aspects of COVID-19.</p></sec><sec><title>Objective</title><p id="Par02">To summarize available evidence and provide perinatologists/neonatologists with tools for managing their patients.</p></sec><sec><title>Methods</title><p id="Par03">Analysis of available literature on COVID-19 using Medline and Google scholar.</p></sec><sec><title>Results</title><p id="Par04">From scant data: vertical transmission from maternal infection during the third trimester probably does not occur or likely it occurs very rarely. Consequences of COVID-19 infection among women during early pregnancy remain unknown. We cannot conclude if pregnancy is a risk factor for more severe disease in women with COVID-19. Little is known about disease severity in neonates, and from very few samples, the presence of SARS-CoV-2 has not been documented in human milk. Links to websites of organizations with updated COVID-19 information are provided. Infographics summarize an approach to the pregnant woman or neonate with suspected or confirmed COVID-19.</p></sec><sec><title>Conclusions</title><p id="Par05">As the pandemic continues, more data will be available that could lead to changes in current knowledge and recommendations.</p></sec></abstract><kwd-group kwd-group-type="npg-subject"><title>Subject terms</title><kwd>Risk factors</kwd><kwd>Scientific community</kwd></kwd-group></article-meta></front><body><sec id="Sec1" sec-type="introduction"><title>Introduction</title><p id="Par2">In a near-prophetic study published in 2015, Menachery et al. warned the medical and scientific communities of the continued risk of the reemergence of severe acute respiratory syndrome coronavirus (SARS-CoV) from viruses currently circulating in Chinese bat populations [<xref ref-type="bibr" rid="CR1">1</xref>]. In the recent past, bat-borne viruses transmitted to humans have led to human to human transmission, with high fatality rates, as happened during the 2002–2003 SARS-CoV-1 [<xref ref-type="bibr" rid="CR2">2</xref>] and the 2012 Middle East Respiratory Syndrome Coronavirus (MERS-CoV) [<xref ref-type="bibr" rid="CR3">3</xref>] epidemics.</p><p id="Par3">On November 17, 2019, the first case of infection with a novel coronavirus was identified according to Chinese government sources [<xref ref-type="bibr" rid="CR4">4</xref>] and the World Health Organization (WHO), which has maintained a day-to-day timeline of the evolution of the current coronavirus pandemic. As predicted by Menachery, through December 2019, sporadic cases in adults from the city of Wuhan, in the Hubei province of China, developed severe respiratory symptoms. Initially, many patients had been exposed at the Hunan wholesale seafood market, but even after closure of this market on January 1, 2020, new cases continued to present at an exponential rate, suggesting human to human transmission [<xref ref-type="bibr" rid="CR5">5</xref>, <xref ref-type="bibr" rid="CR6">6</xref>]. The outbreak was reported by China to the WHO on December 31 and declared a pandemic by the WHO on March 11, 2020 as many other countries throughout the world reported new cases with high fatality rates [<xref ref-type="bibr" rid="CR5">5</xref>]. These high rates may have been fueled by the rapid propagation of the disease that proved country after country, to rapidly exhaust reserve medical supplies and the ability to provide intensive care to an overwhelming increased numbers of patients [<xref ref-type="bibr" rid="CR7">7</xref>]. The novel virus was named SARS-CoV-2 and was identified as the agent of a new respiratory syndrome named COVID-19.</p><p id="Par4">Abundant research has been conducted to date in order to better define the epidemiology, clinical characteristics, prevention, and treatment of SARS-CoV-2 infection. Since the first publications on COVID-19 appeared, a Medline search conducted on March 18, using the keyword of COVID-19 retrieved 1087 articles. Yet, very little is known about the perinatal aspects of COVID-19.</p><p id="Par5">The purpose of this Perspective is to summarize the available evidence at this moment, and to provide perinatologists and neonatologists with practical tools for managing their patients, and offering links to reputable medical organizations websites that are frequently updated. We chose to address the following questions:</p><p id="Par6"><list list-type="order"><list-item><p id="Par7">Is there a vertical transmission of SARS-CoV-2 during pregnancy, and if so, can this lead to abortions, premature labor, or congenital disease such as observed in CMV or Zika disease?</p></list-item><list-item><p id="Par8">Is pregnancy a risk factor for severe COVID-19?</p></list-item><list-item><p id="Par9">What are the dangers of SARS-CoV-2 infection in labor?</p></list-item><list-item><p id="Par10">What are the dangers of SARS-CoV-2 infection in neonates?</p></list-item><list-item><p id="Par11">Can SARS-CoV-2 be transmitted through human milk?</p></list-item></list></p><p id="Par12">We will then describe current expert opinions/guidelines of major organizations such as the United States Center for Diseases Control (CDC), the American College of Obstetricians and Gynecologists (ACOG) and the Society for Maternal–Fetal Medicine (SMFM), the United Kingdom National Health Services (NHS), the Royal College of Obstetricians and Gynecologists (RCOG), the Academy of Breastfeeding Medicine (ABM), the National Institutes of Health (NIH), and the American Academy of Pediatrics (AAP).</p></sec><sec id="Sec2"><title>Is there vertical transmission of SARS-CoV-2 during pregnancy?</title><p id="Par13">Very few articles have attempted to answer this question. The first was a retrospective review of nine Chinese pregnant women by Chen et al. with laboratory-confirmed COVID-19 pneumonia [<xref ref-type="bibr" rid="CR8">8</xref>]. All nine patients had a cesarean section in the third trimester, but the indications for this mode of delivery were not clearly stated. Amniotic fluid, cord blood, and neonatal throat swabs all tested negative for the virus.The authors of this small case series suggested that there is currently no evidence for intrauterine infection caused by vertical transmission in women who develop COVID-19 pneumonia in late pregnancy. An additional study published by Zhang in the Chinese language compared 16 pregnant women with COVID-19 to 45 women without COVID-19 [<xref ref-type="bibr" rid="CR9">9</xref>]. In this study, all infants in both groups were delivered by cesarean section, at a gestational age of 38.7 ± 1.4 weeks in the COVID-19 group and 37.9 ± 1.6 weeks in the control group. Only one of the 16 pregnant women with COVID-19 had a severe disease. Ten neonates in the COVID-19 group were tested by PCR and all were found to be negative. Both studies, authored by Chen and Zhang [<xref ref-type="bibr" rid="CR8">8</xref>, <xref ref-type="bibr" rid="CR9">9</xref>], came from the same institution and it is not clear whether or not there was an overlap among the patients. An additional Chinese study by Fan et al. [<xref ref-type="bibr" rid="CR10">10</xref>] described two cases of COVID-19 during the third trimester of pregnancy, which “failed to identify SARS-CoV-2 in all the products of conception and the newborns”, and suggested a “low risk of intrauterine infection by vertical transmission of SARS-CoV-2”. An additional study by Chen et al. [<xref ref-type="bibr" rid="CR11">11</xref>] reported that three placentas from infected mothers tested negative for the virus. Finally a most recent article by Chen et al. described four infants delivered to mothers with COVID-19 during labor [<xref ref-type="bibr" rid="CR12">12</xref>]. Infant testing was performed in only three, who all tested negative for the virus. In an update [<xref ref-type="bibr" rid="CR13">13</xref>], authors of previous series described 33 neonates of whom 3 were reported to have early onset COVID-19 infection. Nasopharyngeal/anal swabs for RT-PCR were not obtained immediately after birth in any of the infants, indicating positivity of the test does not prove vertical transmission. There are only two reports in the nonmedical, general literature that suggested that vertical transmission may be possible. In one report, an infant tested positive but testing took place at 30 h of age when horizontal transmission cannot be ruled out [<xref ref-type="bibr" rid="CR14">14</xref>]. In contrast, in the second report, a newborn with a positive test was born to a mother who was also positive for the virus, and the newborn screening took place “within a few minutes” after delivery [<xref ref-type="bibr" rid="CR15">15</xref>]. This is more suggestive of a vertical transmission. In a recent letter, Dong et al report a newborn with elevated SARS-Cov-2 IgM, IgG and IL-16 levels at 2 hours after birth with negative nasopharyngeal swabs for RT-PCR from 2 h to 16 d after birth; amniotic fluid, placenta, or cord blood was not tested [<xref ref-type="bibr" rid="CR16">16</xref>]. In an accompanying Editorial, Kimberlin and Stagno caution interpretation of these results as confirmation of vertical transmission due to a variety of concerns including technical concerns with IgM assays [<xref ref-type="bibr" rid="CR17">17</xref>]. Importantly, vertical transmission has not been observed in either SARS-CoV-1 or in MERS-CoV [<xref ref-type="bibr" rid="CR18">18</xref>]. From these scant data, we cautiously conclude that vertical transmission from maternal infection during the third trimester probably does not occur, or likely occurs very rarely. However, the consequences of COVID-19 infection among women during early pregnancy remain unknown. We do not know whether the virus may be vertically transmitted to the fetus causing malformations, fetal growth abnormalities, disruption of maturing fetal organs, or leads to early fetal loss, abortions, or induces premature onset of labor.</p></sec><sec id="Sec3"><title>Is pregnancy a risk factor for severe SARS-CoV-2 infection?</title><p id="Par14">Pregnancy is a partially immunocompromised state and any viral or bacterial pneumonia can be life-threatening during pregnancy [<xref ref-type="bibr" rid="CR19">19</xref>]. However, despite the fact that COVID-19 is known to cause severe life-threatening respiratory complications in adults, especially the immunocompromised, there are no comparative data to determine whether pregnancy is a risk factor for severe SARS-CoV-2 pneumonia. In Chen’s study, all nine pregnant women had laboratory-confirmed SARS-CoV-2. Eight of 9 women had evidence of pneumonia on chest CT [<xref ref-type="bibr" rid="CR8">8</xref>] and seven presented with fever. Other symptoms included cough among 4 of 9 patients. None of the patients died or developed severe SARS-CoV-2 pneumonia. Based on their small series of nine cases, the authors concluded that the clinical characteristics of COVID-19 pneumonia in pregnant women were similar to those reported for nonpregnant adult patients. In the study by Zhang et al. none of the 16 women with Covid-19 progressed to “critical pneumonia” [<xref ref-type="bibr" rid="CR9">9</xref>]. Based on these scant data, we cannot conclude if pregnancy is a risk factor for more severe disease in women with COVID-19. It might be important however to determine whether complications of pregnancy such as diabetes, cardiac failure, or hypertension, which have been identified as risk factors for severe COVID-19 infections in nonpregnant adults, also represent additional risk factors for pregnant women [<xref ref-type="bibr" rid="CR20">20</xref>].</p></sec><sec id="Sec4"><title>What are the dangers of COVID-19 infections in labor?</title><p id="Par15">In Chen’s study [<xref ref-type="bibr" rid="CR8">8</xref>], all nine infants born to COVID-19 infected pregnant mothers had normal 1- and 5-min Apgar scores. In Zhang’s study [<xref ref-type="bibr" rid="CR9">9</xref>], the comparison of pregnancy outcomes between 16 women with COVID-19 and 45 women without COVID-19 did not demonstrate any significant differences in fetal distress, meconium-stained amniotic fluid, preterm birth, and neonatal asphyxia. These two small studies, with limited clinical information lack clearly described indications for cesarean deliveries and do not provide an answer to our question.</p></sec><sec id="Sec5"><title>WHAT are the dangers of SARS-CoV-2 infections in neonates?</title><p id="Par16">The report by Zhu et al. [<xref ref-type="bibr" rid="CR21">21</xref>] represents a clinical retrospective analysis of ten neonates born to nine mothers with confirmed COVID-19 pneumonia. There were four full-term infants and six were born prematurely; two were small-for-gestational-age infants and one was large-for-gestational-age (LGA). Six infants developed RDS, two of them were febrile, and two had thrombocytopenia with abnormal liver enzymes. Five infants went home healthy, and when the article was published, four were still hospitalized in stable condition, while one child died. Specimens for SARS-CoV-2 analyses were collected from nine of the ten neonates 1 to 9 days after birth and all were negative. It is unclear if the complications noted were related to prematurity or to SARS-CoV-2, but the negative testing would suggest that the virus was unlikely to be the cause. In Dong’s report of 2143 children with Covid-19 in China, the illness appeared to be most often less severe than in adults, as only 13 patients were classified as “critical” [<xref ref-type="bibr" rid="CR22">22</xref>]. In this report, there were no infants classified as neonates, and the youngest ones were classified as less than 1 year old. From this report there is some suggestion that the younger the child, the more severe the disease. In Chen’s study [<xref ref-type="bibr" rid="CR12">12</xref>], four full-term, singleton infants were born to pregnant women who tested positive for COVID-19 in the city of Wuhan where the disease was first identified. None of the infants developed the typical COVID-19 symptoms of fever and cough, however two of them developed rashes, one had facial ulcerations, and one infant had respiratory distress which was supported by noninvasive mechanical ventilation for 3 days. However, none of the three infants out of four infants tested had positive viral results and it is probable that the above-mentioned symptoms were unrelated to SARS-CoV-2. In their updated series of 33 infants, Zeng et al [<xref ref-type="bibr" rid="CR13">13</xref>] describe 3 infants diagnosed with pneumonia with persisting positive viral detection by RT-PCR within a few days of the first PCR; thus these 3 infants probably were truly infected. Whether 2 of 3 term infants diagnosed with pneumonia actually had pneumonia is unclear, as they had no respiratory symptoms and their chest radiographs lacked typical findings of pneumonia. The third infant diagnosed as pneumonia, born prematurely at 31 weeks, suffered from a depressed 5-minute Apgar score, respiratory distress syndrome, and disseminated intravascular coagulation. A blood culture yielded <italic>Enterobacter agglomerans</italic>, suggesting symptomatology was probably unrelated to SARS-CoV-2. Thus, we cannot define from these limited data the extent of disease severity in neonates.</p></sec><sec id="Sec6"><title>Can SARS-CoV-2 be transmitted through human milk?</title><p id="Par17">In Chen H’s study of nine pregnant women with laboratory-confirmed COVID-19 pneumonia, all breast milk samples that were collected and tested from six patients after the first lactation were negative for the virus [<xref ref-type="bibr" rid="CR6">6</xref>]. This is obviously an insufficient sample size to make a definitive statement that SARS-CoV-2 is or is not excreted in human milk.</p></sec><sec id="Sec7"><title>Expert opinions/guidelines/useful links</title><p id="Par18"><list list-type="order"><list-item><p id="Par19">General prevention measures for preventing the spread of infection:</p><p id="Par20">We recommend using the CDC site for this purpose. This website is regularly updated, and it is not within the scope of this article to describe these guidelines, which may be found at:</p><p id="Par21"><ext-link ext-link-type="uri" xlink:href="https://www.cdc.gov/coronavirus/2019-ncov/infection-control/control-recommendations.html">https://www.cdc.gov/coronavirus/2019-ncov/infection-control/control-recommendations.html</ext-link>.</p></list-item><list-item><p id="Par22">Guidelines for inpatient obstetric healthcare settings: these guidelines may be found at the website: <ext-link ext-link-type="uri" xlink:href="https://www.cdc.gov/coronavirus/2019-ncov/hcp/inpatient-obstetric-healthcare-guidance.html">https://www.cdc.gov/coronavirus/2019-ncov/hcp/inpatient-obstetric-healthcare-guidance.html</ext-link>.</p><p id="Par23">Briefly, pregnant patients who have confirmed COVID-19 or who are “persons under investigation” (PUIs) are instructed to notify the obstetric unit prior to arrival in order to facilitate appropriate infection control measures. The obstetric unit is to notify infection control personnel in order to obtain appropriate guidance.</p><p id="Par24">Infants born to mothers with confirmed COVID-19 should be considered PUIs and isolated as such.</p><p id="Par25">After birth, in order to reduce the risk of transmission of the virus from the mother to the newborn, facilities should consider temporarily separating mother from her baby in a separate isolation room until the mother’s transmission-based precautions are discontinued. Visitors and staff members should use appropriate PPE, including a gown, gloves, facemask, and eye protection. Separation should be discontinued on a case-by-case basis accounting for disease severity, illness signs and symptoms, and results of laboratory testing for the virus.</p><p id="Par26">If rooming-in occurs in accordance with the mother’s wishes or is unavoidable due to facility limitations, the newborn should be kept ≥6 feet (~2 m) away from his or her mother. Should the mother with confirmed COVID-19 or PUI take care of her infant, she should put on a facemask and practice hand hygiene before each feeding or other close contact with her newborn.</p></list-item><list-item><p id="Par27">Guidelines for breastfeeding.</p><p id="Par28">These guidelines can be found at the website: <ext-link ext-link-type="uri" xlink:href="https://www.cdc.gov/coronavirus/2019-ncov/prepare/pregnancy-breastfeeding.html">https://www.cdc.gov/coronavirus/2019-ncov/prepare/pregnancy-breastfeeding.html</ext-link>.</p><p id="Par29">Briefly: the CDC recommends that during temporary separation, mothers should be encouraged to express their breast milk to establish and maintain milk supply, using a dedicated breast pump, and after adequate hand hygiene. This expressed breast milk is intended may be fed to the newborn by a healthy caregiver. As stated earlier, if a mother and newborn do room-in and the mother wishes to feed at the breast, she should put on a facemask and practice hand hygiene before each feeding.</p><p id="Par30">These CDC recommendations are consistent with the ABM recommendations to be found in detail at the website:</p><p id="Par31"><ext-link ext-link-type="uri" xlink:href="https://www.bfmed.org/abm-statement-coronavirus">https://www.bfmed.org/abm-statement-coronavirus</ext-link>.</p><p id="Par32">These are also the basis of the Society for Maternal–Fetal Medicine guidelines to be found at the website:</p><p id="Par33"><ext-link ext-link-type="uri" xlink:href="https://s3.amazonaws.com/cdn.smfm.org/media/2267/COVID19-_updated_3-17-20_PDF.pdf">https://s3.amazonaws.com/cdn.smfm.org/media/2267/COVID-19-_updated_3-17-20_PDF.pdf</ext-link>.</p><p id="Par34">ACOG also adopted the CDC guidelines regarding breastfeeding, as can be read in detail at the website:</p><p id="Par35"><ext-link ext-link-type="uri" xlink:href="https://www.acog.org/clinical/clinical-guidance/practice-advisory/articles/2020/03/novel-coronavirus-2019">https://www.acog.org/clinical/clinical-guidance/practice-advisory/articles/2020/03/novel-coronavirus-2019</ext-link>.</p></list-item><list-item><p id="Par36">General advice for pregnant women who may have been exposed to COVID-19 or are experiencing symptoms suggestive of COVID-19. We suggest consulting the UK NHS /RCOGguidelines which recommend that pregnant women concerned about exposure or symptoms indicating possible infection with COVID-19 should not visit their GP practice or attend Emergency Departments in person, but should rather contact their local hotline and tell the operator of possible COVID-19 exposure, and self-isolate until advised otherwise.</p><p id="Par37">More details are provided at the website: <ext-link ext-link-type="uri" xlink:href="https://www.rcog.org.uk/en/guidelines-research-services/guidelines/coronavirus-pregnancy/covid-19-virus-infection-and-pregnancy/">https://www.rcog.org.uk/en/guidelines-research-services/guidelines/coronavirus-pregnancy/covid-19-virus-infection-and-pregnancy/</ext-link>.</p></list-item><list-item><p id="Par38">Advice regarding self-isolation for women with possible or confirmed COVID-19</p><p id="Par39">The above-mentioned NHS guidelines, like others, recommend that pregnant women who have been advised to be self-isolated, should stay indoors and avoid contact with others for 14 days.</p></list-item><list-item><p id="Par40">The WHO has maintained a day-to-day tally of the global and country-specific information concerning statistics and public health measures undertaken at individual country levels.</p><p id="Par41"><ext-link ext-link-type="uri" xlink:href="https://www.who.int/emergencies/diseases/novel-coronavirus-2019">https://www.who.int/emergencies/diseases/novel-coronavirus-2019</ext-link>.</p></list-item><list-item><p id="Par42">The NIH has provided a quick access to the most recent research on COVID-19 at the following address:</p><p id="Par43"><ext-link ext-link-type="uri" xlink:href="https://www.nih.gov/health-information/coronavirus">https://www.nih.gov/health-information/coronavirus</ext-link>.</p><p id="Par44">This address allows registering to a mailing list of participants that will receive automatic updates from the NIH on Coronavirus.</p></list-item><list-item><p id="Par041">The AAP has built an educational website on COVID-19, that may be reached at the following address: <ext-link ext-link-type="uri" xlink:href="https://services.aap.org/en/pages/2019-novel-coronavirus-covid-19-infections/">https://services.aap.org/en/pages/2019-novel-coronavirus-covid-19-infections/</ext-link>. Within this website, one can read a document of “Initial Guidance” on the management of infants born to mothers with COVID-19, published on April 2, 2020, that may be downloaded from the following address: https://download.aap.org/AAP/PDF/COVID%2019%20Initial%Newborn%20Guidance.pdf. This document is particularly useful as it describes the personal protective equipment to be used and isolation precautions to be taken, both for customary contact and for high risk situations such as when patients require bag and mask ventilation, intubation, tracheal suctioning, nasal cannula oxygen at high flow, continuous positive airway pressure and/or positive pressure ventilation of any type, given the potential for these supports to generate aerosols. It also provides preliminary guidelines for delivery room management of neonates, instructions for newborn admission after maternal separation, and guidance for alternative well newborn care. The AAP recommends at this point in time that molecular assay testing should be done at approximately 24 hours of age in all infants born to mothers with COVID-19, and that repeat testing should be done at approximately 48 hours of age. The AAP document also addresses the issue of maternal visitation for infants requiring ongoing hospital care, and spells the criteria that need to be met for visitation to happen.</p></list-item></list></p></sec><sec id="Sec8" sec-type="conclusion"><title>Conclusion</title><p id="Par45">We strongly advise the readers that this Perspective be considered preliminary. As the pandemic continues, there will be more data available that could lead to significant changes in the current recommendations. The above-mentioned websites have been built by reputable organizations and are updated frequently. They should establish the best perinatal and neonatal practices. In the meanwhile, we are providing an illustration (Fig. <xref rid="Fig1" ref-type="fig">1</xref>) that summarizes many of the concepts described in this text. Figure <xref rid="Fig2" ref-type="fig">2</xref> outlines a suggested algorithm for the perinatal and neonatal management of a PUI (person under investigation) with suspected COVID-19 infection.<fig id="Fig1"><label>Fig. 1</label><caption><title>Infographic showing maternal clinical features, possible modes of spread to the neonate and neonatal management of suspected or confirmed COVID-19.</title><p>There is a wide range of illness among mothers from asymptomatic to pneumonia to severe acute respiratory distress syndrome (ARDS). Term neonates born to COVID-19 mothers are usually asymptomatic. PPE personal protective equipment, CPAP continuous positive airway pressure, HFNC high flow nasal cannula, PAPR powered air purifying respirator.</p></caption><graphic xlink:href="41372_2020_665_Fig1_HTML" id="d29e639"></graphic></fig><fig id="Fig2"><label>Fig. 2</label><caption><title>Current recommended management of suspected pregnant woman with influenza-like illness with suspected novel 2019 coronavirus infection (COVID-19).</title><p>If maternal tests are positive, mothers should wear a mask for source containment. Minimum number of providers should be in the delivery/operating room to reduce exposure risk. Additional providers can be on standby outside the room to reduce personal protective equipment (PPE) burnout. Neonatal providers performing infant stabilization should attend delivery with PPE to provide airborne precautions and infant is immediately isolated from the mother after delivery and cared in a separate room pending testing. Recommended testing is nasopharyngeal and throat swabs at 24 h after birth and repeated 48 h after birth. If these tests are negative and baby is asymptomatic, he/she can be discharged to be cared for by a noninfected, asymptomatic caretaker pending negative repeat tests and resolution of symptoms in the mother. If infant is positive but asymptomatic, baby can be discharged but may need to be quarantined at home. If possible, uninfected individuals >60 years of age or with comorbid conditions should not care for these infants. If symptomatic, baby needs NICU care. These guidelines are subject to change with emerging evidence.</p></caption><graphic xlink:href="41372_2020_665_Fig2_HTML" id="d29e650"></graphic></fig></p></sec></body><back><fn-group><fn><p><bold>Publisher’s note</bold> Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.</p></fn></fn-group><notes notes-type="author-contribution"><title>Author contributions</title><p>FM and JM wrote the paper, SP and SL edited paper, SL prepared the artwork, and TR and PG contributed to the concept, scientific content, and editing of the paper.</p></notes><notes notes-type="ethics"><title>Compliance with ethical standards</title><notes notes-type="COI-statement"><title>Conflict of interest</title><p id="Par46">The authors declare that they have no conflict of interest.</p></notes></notes><ref-list id="Bib1"><title>References</title><ref id="CR1"><label>1.</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Menachery</surname><given-names>VD</given-names></name><name><surname>Yount</surname><given-names>BL</given-names><suffix>Jr</suffix></name><name><surname>Debbink</surname><given-names>K</given-names></name><name><surname>Agnihothram</surname><given-names>S</given-names></name><name><surname>Gralinski</surname><given-names>LE</given-names></name><name><surname>Plante</surname><given-names>JA</given-names></name><etal></etal></person-group><article-title>A SARS-like cluster of circulating bat coronaviruses shows potential for human emergence</article-title><source>Nat Med</source><year>2015</year><volume>21</volume><fpage>1508</fpage><lpage>13</lpage><pub-id pub-id-type="doi">10.1038/nm.3985</pub-id><pub-id pub-id-type="pmid">26552008</pub-id></element-citation></ref><ref id="CR2"><label>2.</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Chan-Yeung</surname><given-names>M</given-names></name><name><surname>Xu</surname><given-names>RH</given-names></name></person-group><article-title>SARS: epidemiology</article-title><source>Respirology</source><year>2003</year><volume>8</volume><fpage>S9</fpage><lpage>14</lpage><pub-id pub-id-type="doi">10.1046/j.1440-1843.2003.00518.x</pub-id><pub-id pub-id-type="pmid">15018127</pub-id></element-citation></ref><ref id="CR3"><label>3.</label><mixed-citation publication-type="other">Middle East Respiratory Syndrome Coronavirus. 2020. <ext-link ext-link-type="uri" xlink:href="https://www.who.int/emergencies/mers-cov/en/">https://www.who.int/emergencies/mers-cov/en/</ext-link>. 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