Middle Eastern Respiratory Syndrome Corona Virus (MERS CoV): case reports from a tertiary care hospital in Saudi Arabia
Identifieur interne : 000543 ( Pmc/Corpus ); précédent : 000542; suivant : 000544Middle Eastern Respiratory Syndrome Corona Virus (MERS CoV): case reports from a tertiary care hospital in Saudi Arabia
Auteurs : Mohammad Khalid ; Basha Khan ; Fahad Al Rabiah ; Ruwaida Alismaili ; Sarfraz Saleemi ; Agha Muhammad Rehan-Khaliq ; Ihab Weheba ; Hail Al Abdely ; Magid Halim ; Quaid Johar Nadri ; Abdullah Mohsin Al Dalaan ; Mohamed Zeitouni ; Taimur Butt ; Eid Al MutairySource :
- Annals of Saudi Medicine [ 0256-4947 ] ; 2014.
Abstract
Middle Eastern respiratory syndrome caused by novel coronavirus (MERS CoV) has been a major public health challenge since it was first described in 2012 in Saudi Arabia. So far, there is no effective treatment for this serious illness, which features a high mortality rate. We report an initial experience of the use of ribavirin and interferon (IFN)-α2b in the management of MERS CoV at a tertiary care hospital.
A case series of 6 patients admitted with a confirmed diagnosis of MERS CoV were treated with ribavirin and IFN-α2b in addition to supportive management. The patients’ demographics, clinical parameters, and outcomes were recorded. Fifty-four close contacts of these patients were screened for MERS CoV.
Six patients with MERS CoV infection were included in this study. Four cases featured symptomatic disease, including pneumonia and respiratory failure, while 2 were asymptomatic close contacts of the MERS CoV patients. The MERS CoV infection was confirmed by reverse transcription–polymerase chain reaction detection of the consensus viral RNA targets upstream of the E gene (UPE) and open reading frame (ORF1b) on a sputum sample. The patients’ demographics, comorbid conditions, time to diagnosis and initiation of treatment, and clinical outcomes were recorded.
Three out of 6 patients who had comorbid conditions died during the study period, while 3 had successful outcomes. The diagnosis and treatment was delayed by an average of 15 days in those patients who died. Only 2 close contacts out of the 54 screened (3.7%) were positive for MERS CoV.
Treatment with ribavirin and IFN-α2b may be effective in patients infected with MERS CoV. There appears to be a low infectivity rate among close contacts of MERS CoV patients.
Url:
DOI: 10.5144/0256-4947.2014.396
PubMed: 25827696
PubMed Central: 6074560
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Middle Eastern Respiratory Syndrome Corona Virus (MERS CoV): case reports from a tertiary care hospital in Saudi Arabia</title><author><name sortKey="Khalid, Mohammad" sort="Khalid, Mohammad" uniqKey="Khalid M" first="Mohammad" last="Khalid">Mohammad Khalid</name></author><author><name sortKey="Khan, Basha" sort="Khan, Basha" uniqKey="Khan B" first="Basha" last="Khan">Basha Khan</name></author><author><name sortKey="Al Rabiah, Fahad" sort="Al Rabiah, Fahad" uniqKey="Al Rabiah F" first="Fahad" last="Al Rabiah">Fahad Al Rabiah</name></author><author><name sortKey="Alismaili, Ruwaida" sort="Alismaili, Ruwaida" uniqKey="Alismaili R" first="Ruwaida" last="Alismaili">Ruwaida Alismaili</name></author><author><name sortKey="Saleemi, Sarfraz" sort="Saleemi, Sarfraz" uniqKey="Saleemi S" first="Sarfraz" last="Saleemi">Sarfraz Saleemi</name></author><author><name sortKey="Rehan Khaliq, Agha Muhammad" sort="Rehan Khaliq, Agha Muhammad" uniqKey="Rehan Khaliq A" first="Agha Muhammad" last="Rehan-Khaliq">Agha Muhammad Rehan-Khaliq</name></author><author><name sortKey="Weheba, Ihab" sort="Weheba, Ihab" uniqKey="Weheba I" first="Ihab" last="Weheba">Ihab Weheba</name></author><author><name sortKey="Al Abdely, Hail" sort="Al Abdely, Hail" uniqKey="Al Abdely H" first="Hail" last="Al Abdely">Hail Al Abdely</name></author><author><name sortKey="Halim, Magid" sort="Halim, Magid" uniqKey="Halim M" first="Magid" last="Halim">Magid Halim</name></author><author><name sortKey="Nadri, Quaid Johar" sort="Nadri, Quaid Johar" uniqKey="Nadri Q" first="Quaid Johar" last="Nadri">Quaid Johar Nadri</name></author><author><name sortKey="Al Dalaan, Abdullah Mohsin" sort="Al Dalaan, Abdullah Mohsin" uniqKey="Al Dalaan A" first="Abdullah Mohsin" last="Al Dalaan">Abdullah Mohsin Al Dalaan</name></author><author><name sortKey="Zeitouni, Mohamed" sort="Zeitouni, Mohamed" uniqKey="Zeitouni M" first="Mohamed" last="Zeitouni">Mohamed Zeitouni</name></author><author><name sortKey="Butt, Taimur" sort="Butt, Taimur" uniqKey="Butt T" first="Taimur" last="Butt">Taimur Butt</name></author><author><name sortKey="Al Mutairy, Eid" sort="Al Mutairy, Eid" uniqKey="Al Mutairy E" first="Eid" last="Al Mutairy">Eid Al Mutairy</name></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">25827696</idno><idno type="pmc">6074560</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6074560</idno><idno type="RBID">PMC:6074560</idno><idno type="doi">10.5144/0256-4947.2014.396</idno><date when="2014">2014</date><idno type="wicri:Area/Pmc/Corpus">000543</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000543</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Middle Eastern Respiratory Syndrome Corona Virus (MERS CoV): case reports from a tertiary care hospital in Saudi Arabia</title><author><name sortKey="Khalid, Mohammad" sort="Khalid, Mohammad" uniqKey="Khalid M" first="Mohammad" last="Khalid">Mohammad Khalid</name></author><author><name sortKey="Khan, Basha" sort="Khan, Basha" uniqKey="Khan B" first="Basha" last="Khan">Basha Khan</name></author><author><name sortKey="Al Rabiah, Fahad" sort="Al Rabiah, Fahad" uniqKey="Al Rabiah F" first="Fahad" last="Al Rabiah">Fahad Al Rabiah</name></author><author><name sortKey="Alismaili, Ruwaida" sort="Alismaili, Ruwaida" uniqKey="Alismaili R" first="Ruwaida" last="Alismaili">Ruwaida Alismaili</name></author><author><name sortKey="Saleemi, Sarfraz" sort="Saleemi, Sarfraz" uniqKey="Saleemi S" first="Sarfraz" last="Saleemi">Sarfraz Saleemi</name></author><author><name sortKey="Rehan Khaliq, Agha Muhammad" sort="Rehan Khaliq, Agha Muhammad" uniqKey="Rehan Khaliq A" first="Agha Muhammad" last="Rehan-Khaliq">Agha Muhammad Rehan-Khaliq</name></author><author><name sortKey="Weheba, Ihab" sort="Weheba, Ihab" uniqKey="Weheba I" first="Ihab" last="Weheba">Ihab Weheba</name></author><author><name sortKey="Al Abdely, Hail" sort="Al Abdely, Hail" uniqKey="Al Abdely H" first="Hail" last="Al Abdely">Hail Al Abdely</name></author><author><name sortKey="Halim, Magid" sort="Halim, Magid" uniqKey="Halim M" first="Magid" last="Halim">Magid Halim</name></author><author><name sortKey="Nadri, Quaid Johar" sort="Nadri, Quaid Johar" uniqKey="Nadri Q" first="Quaid Johar" last="Nadri">Quaid Johar Nadri</name></author><author><name sortKey="Al Dalaan, Abdullah Mohsin" sort="Al Dalaan, Abdullah Mohsin" uniqKey="Al Dalaan A" first="Abdullah Mohsin" last="Al Dalaan">Abdullah Mohsin Al Dalaan</name></author><author><name sortKey="Zeitouni, Mohamed" sort="Zeitouni, Mohamed" uniqKey="Zeitouni M" first="Mohamed" last="Zeitouni">Mohamed Zeitouni</name></author><author><name sortKey="Butt, Taimur" sort="Butt, Taimur" uniqKey="Butt T" first="Taimur" last="Butt">Taimur Butt</name></author><author><name sortKey="Al Mutairy, Eid" sort="Al Mutairy, Eid" uniqKey="Al Mutairy E" first="Eid" last="Al Mutairy">Eid Al Mutairy</name></author></analytic><series><title level="j">Annals of Saudi Medicine</title><idno type="ISSN">0256-4947</idno><idno type="eISSN">0975-4466</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>BACKGROUND AND OBJECTIVES</title><p>Middle Eastern respiratory syndrome caused by novel coronavirus (MERS CoV) has been a major public health challenge since it was first described in 2012 in Saudi Arabia. So far, there is no effective treatment for this serious illness, which features a high mortality rate. We report an initial experience of the use of ribavirin and interferon (IFN)-α2b in the management of MERS CoV at a tertiary care hospital.</p></sec><sec><title>DESIGN AND SETTINGS</title><p>A case series of 6 patients admitted with a confirmed diagnosis of MERS CoV were treated with ribavirin and IFN-α2b in addition to supportive management. The patients’ demographics, clinical parameters, and outcomes were recorded. Fifty-four close contacts of these patients were screened for MERS CoV.</p></sec><sec><title>METHODS</title><p>Six patients with MERS CoV infection were included in this study. Four cases featured symptomatic disease, including pneumonia and respiratory failure, while 2 were asymptomatic close contacts of the MERS CoV patients. The MERS CoV infection was confirmed by reverse transcription–polymerase chain reaction detection of the consensus viral RNA targets upstream of the E gene (UPE) and open reading frame (ORF1b) on a sputum sample. The patients’ demographics, comorbid conditions, time to diagnosis and initiation of treatment, and clinical outcomes were recorded.</p></sec><sec><title>RESULTS</title><p>Three out of 6 patients who had comorbid conditions died during the study period, while 3 had successful outcomes. The diagnosis and treatment was delayed by an average of 15 days in those patients who died. Only 2 close contacts out of the 54 screened (3.7%) were positive for MERS CoV.</p></sec><sec><title>CONCLUSION</title><p>Treatment with ribavirin and IFN-α2b may be effective in patients infected with MERS CoV. There appears to be a low infectivity rate among close contacts of MERS CoV patients.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Zaki, Am" uniqKey="Zaki A">AM Zaki</name></author><author><name sortKey="Van Boheemen, S" uniqKey="Van Boheemen S">S van Boheemen</name></author><author><name sortKey="Bestebroer, Tm" uniqKey="Bestebroer T">TM Bestebroer</name></author><author><name sortKey="Osterhaus, Ad" uniqKey="Osterhaus A">AD Osterhaus</name></author><author><name sortKey="Fouchier, Ra" uniqKey="Fouchier R">RA Fouchier</name></author></analytic></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct><analytic><author><name sortKey="Falzarano, D" uniqKey="Falzarano D">D Falzarano</name></author><author><name sortKey="De Wit, E" uniqKey="De Wit E">E de Wit</name></author><author><name sortKey="Martellaro, C" uniqKey="Martellaro C">C Martellaro</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Khan, K" uniqKey="Khan K">K Khan</name></author><author><name sortKey="Sears, J" uniqKey="Sears J">J Sears</name></author><author><name sortKey="Hu, Vw" uniqKey="Hu V">VW Hu</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Alagaili, An" uniqKey="Alagaili A">AN Alagaili</name></author><author><name sortKey="Briese, T" uniqKey="Briese T">T Briese</name></author><author><name sortKey="Mishra, N" uniqKey="Mishra N">N Mishra</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Saey, Th" uniqKey="Saey T">TH Saey</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Briese, T" uniqKey="Briese T">T Briese</name></author><author><name sortKey="Mishra, N" uniqKey="Mishra N">N Mishra</name></author><author><name sortKey="Jain, K" uniqKey="Jain K">K Jain</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Azhar, Ei" uniqKey="Azhar E">EI Azhar</name></author><author><name sortKey="El Kafrawy, Sa" uniqKey="El Kafrawy S">SA El-Kafrawy</name></author><author><name sortKey="Farraj, Sa" uniqKey="Farraj S">SA Farraj</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Falzarano, D" uniqKey="Falzarano D">D Falzarano</name></author><author><name sortKey="De Wit, E" uniqKey="De Wit E">E de Wit</name></author><author><name sortKey="Rasmussen, Al" uniqKey="Rasmussen A">AL Rasmussen</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Al Tawfiq, Ja" uniqKey="Al Tawfiq J">JA Al-Tawfiq</name></author><author><name sortKey="Momattin, H" uniqKey="Momattin H">H Momattin</name></author><author><name sortKey="Dib, J" uniqKey="Dib J">J Dib</name></author><author><name sortKey="Memish, Za" uniqKey="Memish Z">ZA Memish</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Omrani, As" uniqKey="Omrani A">AS Omrani</name></author><author><name sortKey="Saad, Mm" uniqKey="Saad M">MM Saad</name></author><author><name sortKey="Baig, K" uniqKey="Baig K">K Baig</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Guery, B" uniqKey="Guery B">B Guery</name></author><author><name sortKey="Van Der Werf, S" uniqKey="Van Der Werf S">S van der Werf</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Falzarano, D" uniqKey="Falzarano D">D Falzarano</name></author><author><name sortKey="De Wit, E" uniqKey="De Wit E">E de Wit</name></author><author><name sortKey="Martellaro, C" uniqKey="Martellaro C">C Martellaro</name></author><author><name sortKey="Callison, J" uniqKey="Callison J">J Callison</name></author><author><name sortKey="Munster, Vj" uniqKey="Munster V">VJ Munster</name></author><author><name sortKey="Feldmann, H" uniqKey="Feldmann H">H Feldmann</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Momattin, H" uniqKey="Momattin H">H Momattin</name></author><author><name sortKey="Mohammed, K" uniqKey="Mohammed K">K Mohammed</name></author><author><name sortKey="Zumla, A" uniqKey="Zumla A">A Zumla</name></author><author><name sortKey="Memish, Za" uniqKey="Memish Z">ZA Memish</name></author><author><name sortKey="Al Tawfiq, Ja" uniqKey="Al Tawfiq J">JA Al-Tawfiq</name></author></analytic></biblStruct></listBibl></div1></back></TEI><pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Ann Saudi Med</journal-id><journal-id journal-id-type="iso-abbrev">Ann Saudi Med</journal-id><journal-title-group><journal-title>Annals of Saudi Medicine</journal-title></journal-title-group><issn pub-type="ppub">0256-4947</issn><issn pub-type="epub">0975-4466</issn><publisher><publisher-name>King Faisal Specialist Hospital and Research Centre</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">25827696</article-id><article-id pub-id-type="pmc">6074560</article-id><article-id pub-id-type="doi">10.5144/0256-4947.2014.396</article-id><article-id pub-id-type="publisher-id">asm-5-396</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject></subj-group></article-categories><title-group><article-title>Middle Eastern Respiratory Syndrome Corona Virus (MERS CoV): case reports from a tertiary care hospital in Saudi Arabia</article-title></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name><surname>Khalid</surname><given-names>Mohammad</given-names></name></contrib><contrib contrib-type="author"><name><surname>Khan</surname><given-names>Basha</given-names></name></contrib><contrib contrib-type="author"><name><surname>Al Rabiah</surname><given-names>Fahad</given-names></name></contrib><contrib contrib-type="author"><name><surname>Alismaili</surname><given-names>Ruwaida</given-names></name></contrib><contrib contrib-type="author"><name><surname>Saleemi</surname><given-names>Sarfraz</given-names></name></contrib><contrib contrib-type="author"><name><surname>Rehan-Khaliq</surname><given-names>Agha Muhammad</given-names></name></contrib><contrib contrib-type="author"><name><surname>Weheba</surname><given-names>Ihab</given-names></name></contrib><contrib contrib-type="author"><name><surname>Al Abdely</surname><given-names>Hail</given-names></name></contrib><contrib contrib-type="author"><name><surname>Halim</surname><given-names>Magid</given-names></name></contrib><contrib contrib-type="author"><name><surname>Nadri</surname><given-names>Quaid Johar</given-names></name></contrib><contrib contrib-type="author"><name><surname>Al Dalaan</surname><given-names>Abdullah Mohsin</given-names></name></contrib><contrib contrib-type="author"><name><surname>Zeitouni</surname><given-names>Mohamed</given-names></name></contrib><contrib contrib-type="author"><name><surname>Butt</surname><given-names>Taimur</given-names></name></contrib><contrib contrib-type="author"><name><surname>Al Mutairy</surname><given-names>Eid</given-names></name></contrib><aff id="af1-asm-5-396">From the Department of Medicine, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia</aff></contrib-group><author-notes><corresp id="c1-asm-5-396">Correspondence: Dr. Mohammad Khalid, Department of Medicine, King Faisal Specialist Hospital & Research Center PO Box 3354 Riyadh 11211 Saudi Arabia, <email>mkhalid@kfshrc.edu.sa</email></corresp></author-notes><pub-date pub-type="ppub"><season>Sep-Oct</season><year>2014</year></pub-date><volume>34</volume><issue>5</issue><fpage>396</fpage><lpage>400</lpage><permissions><copyright-statement>Copyright © 2014, Annals of Saudi Medicine</copyright-statement><copyright-year>2014</copyright-year><license><license-p>This work is licensed under a <ext-link ext-link-type="uri" xlink:href="https://creativecommons.org/licenses/by-nc-nd/4.0/">Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License</ext-link>.</license-p></license></permissions><abstract><sec><title>BACKGROUND AND OBJECTIVES</title><p>Middle Eastern respiratory syndrome caused by novel coronavirus (MERS CoV) has been a major public health challenge since it was first described in 2012 in Saudi Arabia. So far, there is no effective treatment for this serious illness, which features a high mortality rate. We report an initial experience of the use of ribavirin and interferon (IFN)-α2b in the management of MERS CoV at a tertiary care hospital.</p></sec><sec><title>DESIGN AND SETTINGS</title><p>A case series of 6 patients admitted with a confirmed diagnosis of MERS CoV were treated with ribavirin and IFN-α2b in addition to supportive management. The patients’ demographics, clinical parameters, and outcomes were recorded. Fifty-four close contacts of these patients were screened for MERS CoV.</p></sec><sec><title>METHODS</title><p>Six patients with MERS CoV infection were included in this study. Four cases featured symptomatic disease, including pneumonia and respiratory failure, while 2 were asymptomatic close contacts of the MERS CoV patients. The MERS CoV infection was confirmed by reverse transcription–polymerase chain reaction detection of the consensus viral RNA targets upstream of the E gene (UPE) and open reading frame (ORF1b) on a sputum sample. The patients’ demographics, comorbid conditions, time to diagnosis and initiation of treatment, and clinical outcomes were recorded.</p></sec><sec><title>RESULTS</title><p>Three out of 6 patients who had comorbid conditions died during the study period, while 3 had successful outcomes. The diagnosis and treatment was delayed by an average of 15 days in those patients who died. Only 2 close contacts out of the 54 screened (3.7%) were positive for MERS CoV.</p></sec><sec><title>CONCLUSION</title><p>Treatment with ribavirin and IFN-α2b may be effective in patients infected with MERS CoV. There appears to be a low infectivity rate among close contacts of MERS CoV patients.</p></sec></abstract></article-meta></front><body><p>Since it was first isolated in 2012 from a patient suffering from pneumonia,<xref rid="b1-asm-5-396" ref-type="bibr">1</xref> the Middle Eastern respiratory syndrome caused by novel coronavirus (MERS CoV) infection incidence significantly increased in Saudi Arabia until recently, when only occasional cases have been reported. As of December 11, 2014, the total number of cases reported in Saudi Arabia was 819, of which 352 patients passed away.<xref rid="b2-asm-5-396" ref-type="bibr">2</xref></p><p>The latest guidelines issued by the Ministry of Health of Saudi Arabia in May 2014 recommend screening patients for MERS in the following patient categories:<xref rid="b3-asm-5-396" ref-type="bibr">3</xref></p><list list-type="order"><list-item><p>A person with fever and community-acquired pneumonia or acute respiratory distress syndrome based on clinical or radiological evidence.</p></list-item><list-item><p>A hospitalized patient with health care-associated pneumonia based on clinical and radiological evidence.</p></list-item><list-item><p>A person with (1) acute febrile (≥38°C) illness (2) body aches, headache, diarrhea, or nausea/vomiting, with or without respiratory symptoms and (3) unexplained leucopenia (white blood cell count [WBC] <3.5×10<sup>9</sup>/L) and thrombocytopenia (platelets <150×10<sup>9</sup>/L).</p></list-item><list-item><p>A person (including health care workers) who had protected or unprotected exposure to a confirmed or probable case of MERS CoV infection and who presented with upper or lower respiratory illness within 2 weeks after exposure.</p></list-item></list><p>Although Saudi Arabia is a hub for the Makkah and Madinah cities, which are visited by millions of pilgrims from around the world, studies do not show increased patient numbers, indicating a low infection rate. The reported mortality rate is around 30% to 40%.<xref rid="b4-asm-5-396" ref-type="bibr">4</xref> There are already reports on the spread of MERS CoV in Europe and North America.<xref rid="b5-asm-5-396" ref-type="bibr">5</xref> No definite data exist regarding its mode of transmission. Multiple zoonotic transmissions from animal reservoirs leading to human infection have been suggested; in particular, the camel as a reservoir for the virus has been postulated.<xref rid="b6-asm-5-396" ref-type="bibr">6</xref>–<xref rid="b8-asm-5-396" ref-type="bibr">8</xref> Isolation and sequencing of MERS CoV obtained from a dromedary camel and from a patient who died of laboratory-confirmed MERS CoV infection after close contact with camels have been reported.<xref rid="b9-asm-5-396" ref-type="bibr">9</xref> There are no guidelines on the treatment of MERS CoV infection. Animal data suggest that the treatment of MERS CoV-infected rhesus macaques with interferon-α2b and ribavirin reduces virus replication, moderates the host response, and improves clinical outcomes.<xref rid="b10-asm-5-396" ref-type="bibr">10</xref> A case series of 5 critically ill patients with a late diagnosis of MERS CoV infection who were treated with IFN-α2b and ribavirin did not show any benefit.<xref rid="b11-asm-5-396" ref-type="bibr">11</xref> Omrani et al<xref rid="b12-asm-5-396" ref-type="bibr">12</xref> reported that treatment with ribavirin and pegylated IFN-α2a significantly improves survival 14 days after the diagnosis of MERS CoV infection (<italic>P</italic>=.004). Enhanced survival 28 days after diagnosis in patients who received ribavirin and pegylated IFN-α2a was not statistically significant (<italic>P</italic>=.054).<xref rid="b12-asm-5-396" ref-type="bibr">12</xref></p><p>The King Faisal Specialist Hospital and Research Center is the major tertiary care institute in the country. We report a single-institute experience of patients with MERS CoV infection, its outcomes in infected individuals, the treatment response to ribavirin and IFN-α2b, and its potential transmission to immediate contacts.</p><sec sec-type="methods"><title>METHODS</title><p>Six patients with MERS CoV infection were included in the study. Four cases with symptomatic disease, pneumonia, and respiratory failure, and 2 asymptomatic cases who were close contacts of the MERS CoV patients were included. The MERS CoV infection was confirmed by reverse transcription–polymerase chain reaction (RT-PCR) detection of the consensus viral RNA targets upstream of the E gene (UPE) and open reading frame (ORF1b) on a sputum sample. The workup for mycoplasma, legionella, bacterial infection, and other viruses in the 4 active cases and 2 asymptomatic cases were negative.</p><p>Patients were given ribavirin and IFN-α2b according to the dosage recommended in <xref rid="t1-asm-5-396" ref-type="table">Table 1</xref>. Hemogram, electrolytes, renal function, and liver enzyme levels were normal upon initial presentation for all 6 cases (<xref rid="t2-asm-5-396" ref-type="table">Table 2</xref>).</p><p>Case 2 had a large family of 22 individuals who were all screened. One contact was positive upon screening with an asymptomatic presentation (Case 6) and a normal chest x-ray, but the computed tomography (CT) scan of the chest showed a left lower lobe solitary infiltrate (<xref ref-type="fig" rid="f3-asm-5-396">Figure 3</xref>). For case 4 (<xref rid="t2-asm-5-396" ref-type="table">Table 2</xref>), 3 children had tested negative for MERS CoV, but the spouse (Case 5) developed upper respiratory tract symptoms and lung infiltrates, as observed on chest x-ray. She was negative for MERS CoV infection, but in view of her symptoms and close contact with the patient, she was labeled as a presumptive case of MERS CoV infection. Twentyeight health care workers who came in close contact with infected individuals were screened, and none of them were positive for MERS CoV infection. An antibody assay for CoV was not available in Saudi Arabia at the time of the study; seroconversion in active cases and among close contacts could thus not be identified.</p></sec><sec sec-type="results"><title>RESULTS</title><p>Four cases with active infection developed extensive bilateral lung infiltrates and respiratory failure (<xref ref-type="fig" rid="f1-asm-5-396">Figure 1</xref>). Three patients required ventilatory support, vasopressors, and renal replacement therapy. All 3 patients requiring ventilator support expired due to multiorgan failure. The diagnosis of MERS CoV and treatment with ribavirin and IFN-α2b was delayed in these patients by an average of 14.7 days. Case 4, who tested positive for MERS CoV (and who survived), had bilateral lung infiltrates on chest x-ray with respiratory failure requiring noninvasive ventilator support. This patient was started on ribavirin and IFN-α2b, along with broad-spectrum antibiotics and methylprednisolone pulse therapy on the day of admission. He recovered without developing other organ system failures or hemodynamic compromise, and was discharged from the hospital in stable condition. Case 5, who was a close contact of Case 4, was empirically started on ribavirin and IFN-α2b after developing symptoms (<xref ref-type="fig" rid="f2-asm-5-396">Figure 2</xref>). She recovered with complete resolution of the lung infiltrate.</p><p>Case 6 was a close contact of case 2, who tested positive for MERS CoV. He was asymptomatic, but showed a solitary infiltrate on CT scan of the chest (<xref ref-type="fig" rid="f3-asm-5-396">Figure 3</xref>). He was given empirical therapy with ribavirin and IFN-α2b. The patient remained asymptomatic, and a follow-up CT scan of the chest (<xref ref-type="fig" rid="f3-asm-5-396">Figure 3</xref>) was performed after 2 weeks, showing almost complete resolution of the lung infiltrate.</p><p>Twenty-six family members of active MERS CoV cases and 28 health care workers who came in close contact with the active cases were screened for MERS CoV. Only 2 out of 54 persons screened (3.7%) were positive for MERS CoV. None of the positive contacts were health care workers.</p></sec><sec sec-type="discussion"><title>DISCUSSION</title><p>Since it was first reported in 2012, MERS CoV is emerging as a serious endemic illness associated with high mortality. Saudi Arabia is the most affected country, featuring the majority of reported cases; it has an overall case fatality rate in Saudi Arabia of up to 30% to 40%.</p><p>As in the case of SARS (severe acute respiratory syndrome), the spread of MERS CoV to other parts of the world is expected as a consequence of the increase in international travel. There is also the concern that the yearly Hajj (pilgrimage) season, which is represented by almost every country around the world, may accelerate this spread,<xref rid="b7-asm-5-396" ref-type="bibr">7</xref> although no data suggest such an occurrence. Several other countries, including the United States of America, have reported MERS CoV cases. Most of these cases are travel-related and have originated from Middle Eastern countries.</p><p>The early diagnosis and screening of MERS CoV is difficult due to the lack of comprehensive and clear guidelines, as well as the lack of available screening tests in many health care facilities. Data on treatment with antiviral therapy is not definite.</p><p>Guery and van der Werf<xref rid="b13-asm-5-396" ref-type="bibr">13</xref> highlighted the need for therapeutic protocols for MERS CoV. Ribavirin and IFN-α2b were used during the SARS epidemic of 2003. Because of the similarities between the 2 CoVs, treatment with ribavirin and IFN-α2b has been suggested as a potential therapy for MERS CoV. Recently published data in animal models show that MERS CoV is sensitive to ribavirin and IFN-α2b combination therapy.<xref rid="b14-asm-5-396" ref-type="bibr">14</xref> Both drugs were able to kill the virus at high doses individually, whereas a combination of ribavirin and IFN-α2b had a synergistic killing effect at much lower doses with possible lower toxicity. The animal studies have also shown some prophylactic effects in reducing the severity of the disease in animals.</p><p>In this series of 6 cases, fatal cases were of older ages and had comorbid conditions (Cases 1, 2, and 3; <xref rid="t1-asm-5-396" ref-type="table">Table 1</xref>), and they developed rapidly progressive respiratory and multisystem organ failure, as well as hemodynamic instability. There was a delay in the diagnosis, and the initiation of treatment with ribavirin and IFN-α2b indicated the possibility that the early initiation of therapy might be helpful in patients with MERS CoV infection. <xref rid="b11-asm-5-396" ref-type="bibr">11</xref> This hypothesis is supported by the fact that 3 other patients – 1 symptomatic and 2 asymptomatic patients with radiological changes who received treatment at the beginning of the illness – recovered completely. None of the patients treated with ribavirin and IFN-α2b developed any side effects or complications.</p><p>Since only 2 people among the 54 close contacts acquired the infection, the findings suggest that humanto-human transmission is low. Since MERS CoV was first reported, there has not been an extensive spread of the infection, as is usually the case for influenza outbreaks. An extensive public awareness campaign may have played a role in containing the spread of infection.</p><p>This small case series suggests a possible role of ribavirin and IFN-α2b in the treatment of human MERS CoV infection, if started early in the illness. Delay in treatment, older age groups, and pre-existing comorbid conditions are predictors of poor outcomes. The transmission rate of the infection among close contacts was low in this series. Because of their limitations, case series (such as this one) provide insufficient evidence to make any recommendations regarding therapy. 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person-group-type="author"><name><surname>Momattin</surname><given-names>H</given-names></name><name><surname>Mohammed</surname><given-names>K</given-names></name><name><surname>Zumla</surname><given-names>A</given-names></name><name><surname>Memish</surname><given-names>ZA</given-names></name><name><surname>Al-Tawfiq</surname><given-names>JA</given-names></name></person-group><article-title>Therapeutic options for Middle East respiratory syndrome coronavirus (MERS-CoV)--possible lessons from a systematic review of SARS-CoV therapy</article-title><source>Int J Infect Dis</source><year>2013</year><volume>17</volume><issue>10</issue><fpage>e792</fpage><lpage>e798</lpage><pub-id pub-id-type="pmid">23993766</pub-id></element-citation></ref></ref-list></back><floats-group><fig id="f1-asm-5-396" position="float"><label>Figure 1</label><caption><p>Chest x-ray of a patient showing bilateral lung infiltrates.</p></caption><graphic xlink:href="asm-5-396f1"></graphic></fig><fig id="f2-asm-5-396" position="float"><label>Figure 2</label><caption><p>Chest x-ray showing upper respiratory tract infection and lung infiltrates.</p></caption><graphic xlink:href="asm-5-396f2"></graphic></fig><fig id="f3-asm-5-396" position="float"><label>Figure 3</label><caption><p>Chest x-ray showing almost complete resolution of the lung infiltrate.</p></caption><graphic xlink:href="asm-5-396f3"></graphic></fig><table-wrap id="t1-asm-5-396" position="float"><label>Table 1</label><caption><p>Suggested treatment protocol for Ribavirin and Interferon-α2b therapy.</p></caption><table frame="hsides" rules="cols"><thead><tr><th valign="middle" align="left" rowspan="1" colspan="1">Agent</th><th colspan="3" valign="middle" align="center" rowspan="1">Dosing regimen based on CrCl</th></tr><tr><th colspan="4" valign="bottom" align="left" rowspan="1"><hr></hr></th></tr></thead><tbody><tr><td valign="middle" align="left" rowspan="1" colspan="1"></td><td valign="middle" align="center" rowspan="1" colspan="1">CrCl >50 mL/min</td><td valign="middle" align="center" rowspan="1" colspan="1">CrCl 20–50 mL/min</td><td valign="middle" align="center" rowspan="1" colspan="1">CrCl <20 mL/min or on dialysis</td></tr><tr><td valign="middle" align="left" rowspan="1" colspan="1">Ribavirin (oral)</td><td valign="middle" align="center" rowspan="1" colspan="1">2000 mg loading dose followed by 1200 mg every 8 h for 4 d, then 600 mg every 8 h for 4–6 d</td><td valign="middle" align="center" rowspan="1" colspan="1">2000 mg loading dose followed by 1200 mg every 8 h for 4 d, then 600 mg every 6 h for 4–6 d</td><td valign="middle" align="center" rowspan="1" colspan="1">2000 mg loading dose followed by 200 mg every 6 h for 4 d, then 200 mg every 12 h for 4–6 d</td></tr><tr><td valign="middle" align="left" rowspan="1" colspan="1">Interferon-α2b</td><td colspan="3" valign="middle" align="center" rowspan="1">180 μg subcutaneously once per wk for 2 wk</td></tr></tbody></table><table-wrap-foot><fn id="tfn2-asm-5-396"><p>Note: All dosing recommendations were adopted from Hisham Momattin et al.<xref rid="b15-asm-5-396" ref-type="bibr">15</xref> Abbreviation: CrCl: creatinine clearance.</p></fn></table-wrap-foot></table-wrap><table-wrap id="t2-asm-5-396" position="float"><label>Table 2</label><caption><p>Six cases with MERS CoV infection and treatment response to Ribavirin and Interferon-α2b.</p></caption><table frame="hsides" rules="cols"><thead><tr><th valign="middle" align="left" rowspan="1" colspan="1">Patient (case number)</th><th valign="middle" align="center" rowspan="1" colspan="1">Age (y)</th><th valign="middle" align="center" rowspan="1" colspan="1">Sex</th><th valign="middle" align="center" rowspan="1" colspan="1">Comorbid conditions</th><th valign="middle" align="center" rowspan="1" colspan="1">Time to diagnosis (d)</th><th valign="middle" align="center" rowspan="1" colspan="1">Time to treatment (d)</th><th valign="middle" align="center" rowspan="1" colspan="1">Renal failure</th><th valign="middle" align="center" rowspan="1" colspan="1">Hemodynamic instability</th><th valign="middle" align="center" rowspan="1" colspan="1">Outcome</th></tr><tr><th colspan="9" valign="bottom" align="left" rowspan="1"><hr></hr></th></tr></thead><tbody><tr><td valign="middle" align="left" rowspan="1" colspan="1">1</td><td valign="middle" align="center" rowspan="1" colspan="1">74</td><td valign="middle" align="center" rowspan="1" colspan="1">M</td><td valign="middle" align="center" rowspan="1" colspan="1">Ischemic heart disease heart failure</td><td valign="middle" align="center" rowspan="1" colspan="1">18</td><td valign="middle" align="center" rowspan="1" colspan="1">19</td><td valign="middle" align="center" rowspan="1" colspan="1">+</td><td valign="middle" align="center" rowspan="1" colspan="1">+</td><td valign="middle" align="center" rowspan="1" colspan="1">Expired</td></tr><tr><td valign="middle" align="left" rowspan="1" colspan="1">2</td><td valign="middle" align="center" rowspan="1" colspan="1">84</td><td valign="middle" align="center" rowspan="1" colspan="1">M</td><td valign="middle" align="center" rowspan="1" colspan="1">Right bundle branch block</td><td valign="middle" align="center" rowspan="1" colspan="1">12</td><td valign="middle" align="center" rowspan="1" colspan="1">12</td><td valign="middle" align="center" rowspan="1" colspan="1">+</td><td valign="middle" align="center" rowspan="1" colspan="1">+</td><td valign="middle" align="center" rowspan="1" colspan="1">Expired</td></tr><tr><td valign="middle" align="left" rowspan="1" colspan="1">3</td><td valign="middle" align="center" rowspan="1" colspan="1">76</td><td valign="middle" align="center" rowspan="1" colspan="1">M</td><td valign="middle" align="center" rowspan="1" colspan="1">Cardiomyopathy heart failure</td><td valign="middle" align="center" rowspan="1" colspan="1">14</td><td valign="middle" align="center" rowspan="1" colspan="1">15</td><td valign="middle" align="center" rowspan="1" colspan="1">+</td><td valign="middle" align="center" rowspan="1" colspan="1">+</td><td valign="middle" align="center" rowspan="1" colspan="1">Expired</td></tr><tr><td valign="middle" align="left" rowspan="1" colspan="1">4</td><td valign="middle" align="center" rowspan="1" colspan="1">54</td><td valign="middle" align="center" rowspan="1" colspan="1">M</td><td valign="middle" align="center" rowspan="1" colspan="1">None</td><td valign="middle" align="center" rowspan="1" colspan="1">2</td><td valign="middle" align="center" rowspan="1" colspan="1">2</td><td valign="middle" align="center" rowspan="1" colspan="1">−</td><td valign="middle" align="center" rowspan="1" colspan="1">−</td><td valign="middle" align="center" rowspan="1" colspan="1">Survived</td></tr><tr><td valign="middle" align="left" rowspan="1" colspan="1">5</td><td valign="middle" align="center" rowspan="1" colspan="1">48</td><td valign="middle" align="center" rowspan="1" colspan="1">F</td><td valign="middle" align="center" rowspan="1" colspan="1">None</td><td valign="middle" align="center" rowspan="1" colspan="1">1</td><td valign="middle" align="center" rowspan="1" colspan="1">1</td><td valign="middle" align="center" rowspan="1" colspan="1">−</td><td valign="middle" align="center" rowspan="1" colspan="1">−</td><td valign="middle" align="center" rowspan="1" colspan="1">Survived</td></tr><tr><td valign="middle" align="left" rowspan="1" colspan="1">6</td><td valign="middle" align="center" rowspan="1" colspan="1">17</td><td valign="middle" align="center" rowspan="1" colspan="1">M</td><td valign="middle" align="center" rowspan="1" colspan="1">None</td><td valign="middle" align="center" rowspan="1" colspan="1">1</td><td valign="middle" align="center" rowspan="1" colspan="1">2</td><td valign="middle" align="center" rowspan="1" colspan="1">−</td><td valign="middle" align="center" rowspan="1" colspan="1">−</td><td valign="middle" align="center" rowspan="1" colspan="1">Survived</td></tr></tbody></table><table-wrap-foot><fn id="tfn1-asm-5-396"><p>Abbreviations: MERS CoV: Middle Eastern respiratory syndrome coronavirus; M: male; F: female.</p></fn></table-wrap-foot></table-wrap></floats-group></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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