Infection control practices for SARS in Lao People's Democratic Republic, Taiwan, and Thailand: Experience from mobile SARS containment teams, 2003
Identifieur interne : 000D63 ( Pmc/Corpus ); précédent : 000D62; suivant : 000D64Infection control practices for SARS in Lao People's Democratic Republic, Taiwan, and Thailand: Experience from mobile SARS containment teams, 2003
Auteurs : Nolan E. Lee ; Potjaman Siriarayapon ; Jordan Tappero ; Kow-Tong Chen ; Dean Shuey ; Khanchit Limpakarnjanarat ; Achara Chavavanich ; Scott F. DowellSource :
- American Journal of Infection Control [ 0196-6553 ] ; 2004.
Abstract
Despite available recommendations on infection control for severe acute respiratory syndrome (SARS), information is limited on actual practices in Asian hospitals during the epidemic. We describe practices observed by mobile SARS containment teams (mobile teams) during outbreak investigations.
We retrospectively summarized infection control practices observed in hospitals visited by mobile teams in the Lao People's Democratic Republic (PDR), Taiwan, and Thailand, during March and April 2003.
Mobile teams investigated 22 reports of SARS in 20 hospitals (1, 5, and 14 hospitals in Lao PDR, Taiwan, and Thailand, respectively). Facilities ranged from urban hospitals with negative-pressure isolation rooms and high-efficiency particulate air filtration to rural hospitals with patient rooms open to outside air circulation and intermittent running water. At the time of mobile team visits, 5 (25%) hospitals implemented infection control practices consistent with World Health Organization recommendations on visitor policies, private negative-pressure rooms, and personal protective equipment.
Early in the SARS epidemic, mobile teams found wide variations in infection control practices and resources among Asian hospitals evaluating patients for SARS, indicating the importance of ongoing assessment during SARS preparedness. Mobile teams are one mechanism to assess practices and promote implementation of recommended infection control measures.
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DOI: 10.1016/j.ajic.2004.03.005
PubMed: 15525911
PubMed Central: 7119115
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Infection control practices for SARS in Lao People's Democratic Republic, Taiwan, and Thailand: Experience from mobile SARS containment teams, 2003</title><author><name sortKey="Lee, Nolan E" sort="Lee, Nolan E" uniqKey="Lee N" first="Nolan E." last="Lee">Nolan E. Lee</name><affiliation><nlm:aff id="affa">From the Epidemic Intelligence Service assigned to the Los Angeles County Department of Health Services, Centers for Disease Control and Prevention, Atlanta, GA</nlm:aff></affiliation></author><author><name sortKey="Siriarayapon, Potjaman" sort="Siriarayapon, Potjaman" uniqKey="Siriarayapon P" first="Potjaman" last="Siriarayapon">Potjaman Siriarayapon</name><affiliation><nlm:aff id="affb">International Field Epidemiology Training Program—Thailand, Ministry of Public Health, Nonthaburi, Thailand</nlm:aff></affiliation></author><author><name sortKey="Tappero, Jordan" sort="Tappero, Jordan" uniqKey="Tappero J" first="Jordan" last="Tappero">Jordan Tappero</name><affiliation><nlm:aff id="affc">Thailand Ministry of Public Health—US CDC Collaboration, Nonthaburi, Thailand</nlm:aff></affiliation></author><author><name sortKey="Chen, Kow Tong" sort="Chen, Kow Tong" uniqKey="Chen K" first="Kow-Tong" last="Chen">Kow-Tong Chen</name><affiliation><nlm:aff id="affd">Taiwan Center for Disease Control, Department of Health, Taipei, Taiwan</nlm:aff></affiliation></author><author><name sortKey="Shuey, Dean" sort="Shuey, Dean" uniqKey="Shuey D" first="Dean" last="Shuey">Dean Shuey</name><affiliation><nlm:aff id="affe">World Health Organization, Vientiane, Lao People's Democratic Republic</nlm:aff></affiliation></author><author><name sortKey="Limpakarnjanarat, Khanchit" sort="Limpakarnjanarat, Khanchit" uniqKey="Limpakarnjanarat K" first="Khanchit" last="Limpakarnjanarat">Khanchit Limpakarnjanarat</name><affiliation><nlm:aff id="afff">International Emerging Infections Program, Thailand Ministry of Public Health—US CDC Collaboration, Nonthaburi, Thailand</nlm:aff></affiliation></author><author><name sortKey="Chavavanich, Achara" sort="Chavavanich, Achara" uniqKey="Chavavanich A" first="Achara" last="Chavavanich">Achara Chavavanich</name><affiliation><nlm:aff id="affg">Bamrasnadur Hospital, Bangkok, Thailand</nlm:aff></affiliation></author><author><name sortKey="Dowell, Scott F" sort="Dowell, Scott F" uniqKey="Dowell S" first="Scott F." last="Dowell">Scott F. Dowell</name><affiliation><nlm:aff id="afff">International Emerging Infections Program, Thailand Ministry of Public Health—US CDC Collaboration, Nonthaburi, Thailand</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">15525911</idno><idno type="pmc">7119115</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7119115</idno><idno type="RBID">PMC:7119115</idno><idno type="doi">10.1016/j.ajic.2004.03.005</idno><date when="2004">2004</date><idno type="wicri:Area/Pmc/Corpus">000D63</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000D63</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Infection control practices for SARS in Lao People's Democratic Republic, Taiwan, and Thailand: Experience from mobile SARS containment teams, 2003</title><author><name sortKey="Lee, Nolan E" sort="Lee, Nolan E" uniqKey="Lee N" first="Nolan E." last="Lee">Nolan E. Lee</name><affiliation><nlm:aff id="affa">From the Epidemic Intelligence Service assigned to the Los Angeles County Department of Health Services, Centers for Disease Control and Prevention, Atlanta, GA</nlm:aff></affiliation></author><author><name sortKey="Siriarayapon, Potjaman" sort="Siriarayapon, Potjaman" uniqKey="Siriarayapon P" first="Potjaman" last="Siriarayapon">Potjaman Siriarayapon</name><affiliation><nlm:aff id="affb">International Field Epidemiology Training Program—Thailand, Ministry of Public Health, Nonthaburi, Thailand</nlm:aff></affiliation></author><author><name sortKey="Tappero, Jordan" sort="Tappero, Jordan" uniqKey="Tappero J" first="Jordan" last="Tappero">Jordan Tappero</name><affiliation><nlm:aff id="affc">Thailand Ministry of Public Health—US CDC Collaboration, Nonthaburi, Thailand</nlm:aff></affiliation></author><author><name sortKey="Chen, Kow Tong" sort="Chen, Kow Tong" uniqKey="Chen K" first="Kow-Tong" last="Chen">Kow-Tong Chen</name><affiliation><nlm:aff id="affd">Taiwan Center for Disease Control, Department of Health, Taipei, Taiwan</nlm:aff></affiliation></author><author><name sortKey="Shuey, Dean" sort="Shuey, Dean" uniqKey="Shuey D" first="Dean" last="Shuey">Dean Shuey</name><affiliation><nlm:aff id="affe">World Health Organization, Vientiane, Lao People's Democratic Republic</nlm:aff></affiliation></author><author><name sortKey="Limpakarnjanarat, Khanchit" sort="Limpakarnjanarat, Khanchit" uniqKey="Limpakarnjanarat K" first="Khanchit" last="Limpakarnjanarat">Khanchit Limpakarnjanarat</name><affiliation><nlm:aff id="afff">International Emerging Infections Program, Thailand Ministry of Public Health—US CDC Collaboration, Nonthaburi, Thailand</nlm:aff></affiliation></author><author><name sortKey="Chavavanich, Achara" sort="Chavavanich, Achara" uniqKey="Chavavanich A" first="Achara" last="Chavavanich">Achara Chavavanich</name><affiliation><nlm:aff id="affg">Bamrasnadur Hospital, Bangkok, Thailand</nlm:aff></affiliation></author><author><name sortKey="Dowell, Scott F" sort="Dowell, Scott F" uniqKey="Dowell S" first="Scott F." last="Dowell">Scott F. Dowell</name><affiliation><nlm:aff id="afff">International Emerging Infections Program, Thailand Ministry of Public Health—US CDC Collaboration, Nonthaburi, Thailand</nlm:aff></affiliation></author></analytic><series><title level="j">American Journal of Infection Control</title><idno type="ISSN">0196-6553</idno><idno type="eISSN">1527-3296</idno><imprint><date when="2004">2004</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Background</title><p>Despite available recommendations on infection control for severe acute respiratory syndrome (SARS), information is limited on actual practices in Asian hospitals during the epidemic. We describe practices observed by mobile SARS containment teams (mobile teams) during outbreak investigations.</p></sec><sec><title>Methods</title><p>We retrospectively summarized infection control practices observed in hospitals visited by mobile teams in the Lao People's Democratic Republic (PDR), Taiwan, and Thailand, during March and April 2003.</p></sec><sec><title>Results</title><p>Mobile teams investigated 22 reports of SARS in 20 hospitals (1, 5, and 14 hospitals in Lao PDR, Taiwan, and Thailand, respectively). Facilities ranged from urban hospitals with negative-pressure isolation rooms and high-efficiency particulate air filtration to rural hospitals with patient rooms open to outside air circulation and intermittent running water. At the time of mobile team visits, 5 (25%) hospitals implemented infection control practices consistent with World Health Organization recommendations on visitor policies, private negative-pressure rooms, and personal protective equipment.</p></sec><sec><title>Conclusions</title><p>Early in the SARS epidemic, mobile teams found wide variations in infection control practices and resources among Asian hospitals evaluating patients for SARS, indicating the importance of ongoing assessment during SARS preparedness. Mobile teams are one mechanism to assess practices and promote implementation of recommended infection control measures.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Ksiazek, T G" uniqKey="Ksiazek T">T.G. Ksiazek</name></author><author><name sortKey="Erdman, D" uniqKey="Erdman D">D. Erdman</name></author><author><name sortKey="Goldsmith, C S" uniqKey="Goldsmith C">C.S. 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<front><journal-meta><journal-id journal-id-type="nlm-ta">Am J Infect Control</journal-id><journal-id journal-id-type="iso-abbrev">Am J Infect Control</journal-id><journal-title-group><journal-title>American Journal of Infection Control</journal-title></journal-title-group><issn pub-type="ppub">0196-6553</issn><issn pub-type="epub">1527-3296</issn><publisher><publisher-name>Association for Professionals in Infection Control and Epidemiology, Inc. Published by Mosby, Inc.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">15525911</article-id><article-id pub-id-type="pmc">7119115</article-id><article-id pub-id-type="publisher-id">S0196-6553(04)00449-3</article-id><article-id pub-id-type="doi">10.1016/j.ajic.2004.03.005</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title-group><article-title>Infection control practices for SARS in Lao People's Democratic Republic, Taiwan, and Thailand: Experience from mobile SARS containment teams, 2003</article-title></title-group><contrib-group><contrib contrib-type="author" id="au1"><name><surname>Lee</surname><given-names>Nolan E.</given-names></name><degrees>MD, MPH</degrees><email>nlee@ladhs.org</email><xref rid="affa" ref-type="aff">a</xref><xref rid="cor1" ref-type="corresp">∗</xref></contrib><contrib contrib-type="author" id="au2"><name><surname>Siriarayapon</surname><given-names>Potjaman</given-names></name><degrees>MD</degrees><xref rid="affb" ref-type="aff">b</xref></contrib><contrib contrib-type="author" id="au3"><name><surname>Tappero</surname><given-names>Jordan</given-names></name><degrees>MD, MPH</degrees><xref rid="affc" ref-type="aff">c</xref></contrib><contrib contrib-type="author" id="au4"><name><surname>Chen</surname><given-names>Kow-Tong</given-names></name><degrees>MD, PhD</degrees><xref rid="affd" ref-type="aff">d</xref></contrib><contrib contrib-type="author" id="au5"><name><surname>Shuey</surname><given-names>Dean</given-names></name><degrees>MD</degrees><xref rid="affe" ref-type="aff">e</xref></contrib><contrib contrib-type="author" id="au6"><name><surname>Limpakarnjanarat</surname><given-names>Khanchit</given-names></name><degrees>MD, MPH</degrees><xref rid="afff" ref-type="aff">f</xref></contrib><contrib contrib-type="author" id="au7"><name><surname>Chavavanich</surname><given-names>Achara</given-names></name><degrees>MD</degrees><xref rid="affg" ref-type="aff">g</xref></contrib><contrib contrib-type="author" id="au8"><name><surname>Dowell</surname><given-names>Scott F.</given-names></name><degrees>MD, MPH</degrees><xref rid="afff" ref-type="aff">f</xref></contrib><contrib contrib-type="author" id="au9"><name><surname>SARS Mobile Response Team Investigators</surname></name><xref rid="fn1" ref-type="fn">∗</xref></contrib></contrib-group><aff id="affa"><label>a</label>From the Epidemic Intelligence Service assigned to the Los Angeles County Department of Health Services, Centers for Disease Control and Prevention, Atlanta, GA</aff><aff id="affb"><label>b</label>International Field Epidemiology Training Program—Thailand, Ministry of Public Health, Nonthaburi, Thailand</aff><aff id="affc"><label>c</label>Thailand Ministry of Public Health—US CDC Collaboration, Nonthaburi, Thailand</aff><aff id="affd"><label>d</label>Taiwan Center for Disease Control, Department of Health, Taipei, Taiwan</aff><aff id="affe"><label>e</label>World Health Organization, Vientiane, Lao People's Democratic Republic</aff><aff id="afff"><label>f</label>International Emerging Infections Program, Thailand Ministry of Public Health—US CDC Collaboration, Nonthaburi, Thailand</aff><aff id="affg"><label>g</label>Bamrasnadur Hospital, Bangkok, Thailand</aff><author-notes><corresp id="cor1"><label>∗</label>Reprint requests: Nolan E. Lee, MD, MPH, Office of Health Assessment and Epidemiology, Los Angeles County Department of Health Services, 313 North Figueroa Street, Room 127, Los Angeles, CA 90012. <email>nlee@ladhs.org</email></corresp><fn id="fn1"><label>∗</label><p>See list of members at end of article.</p></fn></author-notes><pub-date pub-type="pmc-release"><day>30</day><month>10</month><year>2004</year></pub-date><pmc-comment> PMC Release delay is 0 months and 0 days and was based on .</pmc-comment>
<pub-date pub-type="ppub"><month>11</month><year>2004</year></pub-date><pub-date pub-type="epub"><day>30</day><month>10</month><year>2004</year></pub-date><volume>32</volume><issue>7</issue><fpage>377</fpage><lpage>383</lpage><permissions><copyright-statement>Copyright © 2004 Association for Professionals in Infection Control and Epidemiology, Inc. Published by Mosby, Inc. All rights reserved.</copyright-statement><copyright-year>2004</copyright-year><copyright-holder>Association for Professionals in Infection Control and Epidemiology, Inc.</copyright-holder><license><license-p>Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.</license-p></license></permissions><abstract><sec><title>Background</title><p>Despite available recommendations on infection control for severe acute respiratory syndrome (SARS), information is limited on actual practices in Asian hospitals during the epidemic. We describe practices observed by mobile SARS containment teams (mobile teams) during outbreak investigations.</p></sec><sec><title>Methods</title><p>We retrospectively summarized infection control practices observed in hospitals visited by mobile teams in the Lao People's Democratic Republic (PDR), Taiwan, and Thailand, during March and April 2003.</p></sec><sec><title>Results</title><p>Mobile teams investigated 22 reports of SARS in 20 hospitals (1, 5, and 14 hospitals in Lao PDR, Taiwan, and Thailand, respectively). Facilities ranged from urban hospitals with negative-pressure isolation rooms and high-efficiency particulate air filtration to rural hospitals with patient rooms open to outside air circulation and intermittent running water. At the time of mobile team visits, 5 (25%) hospitals implemented infection control practices consistent with World Health Organization recommendations on visitor policies, private negative-pressure rooms, and personal protective equipment.</p></sec><sec><title>Conclusions</title><p>Early in the SARS epidemic, mobile teams found wide variations in infection control practices and resources among Asian hospitals evaluating patients for SARS, indicating the importance of ongoing assessment during SARS preparedness. Mobile teams are one mechanism to assess practices and promote implementation of recommended infection control measures.</p></sec></abstract></article-meta><notes><p>Atlanta, Georgia; Vientiane, Lao People's Democratic Republic; Taipei, Taiwan; Nonthaburi and Bangkok, Thailand</p></notes></front><body><p>During 2003, severe acute respiratory syndrome (SARS) was efficiently transmitted among health care workers, patients, and visitors in hospitals. The causative agent of SARS is a novel coronavirus (SARS-CoV).<xref rid="bib1" ref-type="bibr"><sup>1</sup></xref> In some settings, airborne transmission might occur<xref rid="bib2" ref-type="bibr"><sup>2</sup></xref>; however, the main mode of SARS-CoV transmission in the hospital is thought to be through direct or indirect contact of mucus membranes with respiratory droplets or fomites.<xref rid="bib3" ref-type="bibr">3.</xref>, <xref rid="bib4" ref-type="bibr">4.</xref> Large outbreaks among patients and staff have been associated with aerosol-generating procedures (eg, bronchoscopy, endotracheal intubation, and aerosolized therapy).<xref rid="bib5" ref-type="bibr"><sup>5</sup></xref> SARS-CoV can survive for days on dry surfaces and in stool from patients with diarrhea,<xref rid="bib6" ref-type="bibr"><sup>6</sup></xref> a symptom reported by 80% of patients in one series.<xref rid="bib7" ref-type="bibr"><sup>7</sup></xref> The concept of “super-spreaders,” patients who transmit infection to a large number of other persons, has been used to explain some large clusters of disease,<xref rid="bib8" ref-type="bibr"><sup>8</sup></xref> but more needs to be learned about the host, viral, and epidemiologic contributors to super-spreading events.</p><p>Current policies in many countries rely foremost on the immediate recognition and isolation of a patient with SARS at the first point of contact in a hospital. Policies also focus on preventing transmission in the hospital through basic hand hygiene and droplet precautions, administrative measures, and proper management and follow-up of health care workers and other contacts of infected persons.<xref rid="bib9" ref-type="bibr"><sup>9</sup></xref> Closure of hospitals and work quarantine of hospital staff might be necessary once secondary transmission has occurred.<xref rid="bib10" ref-type="bibr"><sup>10</sup></xref> However, during early outbreaks, the standardization of policies and procedures was especially difficult because little was known about the etiologic agent.</p><p>Since the World Health Organization (WHO) issued a global alert during March 2003,<xref rid="bib11" ref-type="bibr"><sup>11</sup></xref> SARS has been reported in over 25 countries.<xref rid="bib12" ref-type="bibr"><sup>12</sup></xref> These countries have varied in the availability of resources for hospital infection control. The US Centers for Disease Control and Prevention (CDC) and WHO issued guidance for the infection control of SARS.<xref rid="bib13" ref-type="bibr">13.</xref>, <xref rid="bib14" ref-type="bibr">14.</xref> However, little information is available on the implementation of these recommendations at hospitals in Asia caring for patients with SARS-CoV infection. Published reports of SARS infection control predominantly describe only large academic hospitals in urban settings. Knowledge on the implementation of practices and approaches to infection control in both developed and developing countries might be important in narrowing the gap between the principles of infection control and actual practice in a SARS epidemic. Because SARS-CoV can be rapidly transmissible and lethal, hospitals must observe strict standards to protect patients, visitors, personnel, and the surrounding community.</p><p>During the course of the epidemic, WHO and health officials in Lao People's Democratic Republic (PDR), Taiwan, and Thailand sought collaboration with the International Emerging Infections Program (IEIP) to investigate reported cases of SARS and to implement necessary hospital infection control measures. These 3 countries reported 355 probable SARS cases with onsets of illness during November 2002 to July 2003.<xref rid="bib12" ref-type="bibr"><sup>12</sup></xref> IEIP is a major component of the Thailand Ministry of Public Health—US CDC Collaboration, with the goal of increasing capacity to identify, prevent, and control emerging infectious diseases. We report a retrospective summary of the infection control practices encountered by mobile SARS containment teams at a broad range of hospital settings in these countries during an early stage in the epidemic.</p><sec id="sec2"><title>Methods</title><p>Mobile SARS containment teams (mobile teams) were organized to investigate reported cases of SARS and to assess hospital infection control practices. Activities of mobile teams included (1) categorization of SARS cases by use of epidemiologic, clinical, and laboratory data in comparison with the WHO case definition of SARS,<xref rid="bib15" ref-type="bibr"><sup>15</sup></xref> (2) direct observation and demonstration of recommended SARS infection control practices, usually simultaneously, and (3) provision of personal protective equipment (PPE) to hospitals actively evaluating patients for SARS infection.</p><p>When a possible SARS case was reported, a mobile team was dispatched. The number of mobile teams was limited by availability of staff from the national health department and accessibility of the hospital. Mobile teams were generally led by a medical epidemiologist or other official from the national health department and often included members experienced in infection control, communications, and hospital engineering. Most teams were equipped with PPE, blood specimen tubes, nasopharyngeal swabs, culture media, and specimen cooler. Patients were later categorized as probable SARS, suspected SARS, or excluded from SARS after review by members of the national health department. Because of time and resource constraints, mobile teams generally visited a hospital only once during the observational period.</p><p>We retrospectively summarized infection control practices observed by mobile teams at the time of their first visits to hospitals during investigations of reported cases in Lao PDR, Taiwan, and Thailand, during the early days of the outbreak from March 11 to April 21, 2003. We used a standardized written questionnaire to obtain data from at least one representative mobile team member to each hospital investigated. We selected WHO recommendations, revised April 24, 2003, as a reasonable benchmark for comparison in this analysis (
<xref rid="tbl1" ref-type="table">Table 1</xref>).<xref rid="bib14" ref-type="bibr"><sup>14</sup></xref> The first version of WHO recommendations was initially released on March 16, 2003.<xref rid="bib16" ref-type="bibr"><sup>16</sup></xref> Each national health department and other organizations had recommendations that varied over time. Since WHO indicated that a private negative pressure room was the preferred method to isolate a patient with SARS, we considered a private negative-pressure room the standard of comparison for patient isolation in this analysis, although other methods might be acceptable (eg, cohorting of patients with SARS). Team investigators used a strip of tissue paper to measure qualitatively the negative air pressure at the entrance of a patient's isolation room. We considered a double-layered gown equivalent to a single gown with an apron.<table-wrap position="float" id="tbl1"><label>Table 1</label><caption><p>Summary of WHO hospital infection control guidance for SARS<xref rid="bib14" ref-type="bibr"><sup>14</sup></xref></p></caption><table frame="hsides" rules="groups"><tbody><tr><td>In the outpatient or triage setting, patients requiring assessment for SARS should be rapidly diverted to a separate area to minimize transmission to others.</td></tr><tr><td>In the inpatient setting, probable SARS cases should be isolated as follows (in order of preference):</td></tr><tr><td> Negative-pressure rooms with door closed</td></tr><tr><td> Single rooms with private bathroom</td></tr><tr><td> Cohort placement in area with independent air circulation and bathroom</td></tr><tr><td>Hospital staff should observe strict barrier nursing and precautions for airborne, droplet, and contact transmission.</td></tr><tr><td>A staff member should be designated to oversee the practice of infection control.</td></tr><tr><td>Visitors, if allowed, should be kept to a minimum.</td></tr><tr><td>Access to clean water for hand washing is essential.</td></tr><tr><td>PPE should be worn by all staff and visitors to the isolation unit and should include:</td></tr><tr><td> Face mask with 95% or greater filter efficiency</td></tr><tr><td> Single pair of gloves</td></tr><tr><td> Eye protection</td></tr><tr><td> Disposable gown</td></tr><tr><td> Apron</td></tr><tr><td> Footwear that can be decontaminated</td></tr></tbody></table><table-wrap-foot><fn><p><italic>WHO</italic>, World Health Organization; <italic>SARS</italic>, severe acute respiratory syndrome; <italic>PPE</italic>, personal protective equipment.</p></fn></table-wrap-foot></table-wrap></p></sec><sec id="sec3"><title>Results</title><p>Each country had case-reporting policies and procedures that changed over time. During the observational period, mobile teams investigated 22 reports of SARS cases in 20 hospitals (1, 5, and 14 hospitals in Lao PDR, Taiwan, and Thailand, respectively). These 20 hospitals identified 27% of the total patients reported and represented 14% of the total hospitals reporting SARS cases to the 3 national health departments during the observational period. Ninety percent of the hospitals visited were located in urban areas. Mobile teams found that hospital staff and administrators generally appreciated the opportunity to review SARS safety practices with an expert team and welcomed suggestions on how to improve the protection of hospital staff.</p><p>Of the 22 reported patients, 10 (45%) subsequently met the WHO case definition of probable SARS,<xref rid="bib15" ref-type="bibr"><sup>15</sup></xref> and 12 (55%) were found to have a diagnosis other than SARS. Selected infection control practices observed by mobile team visits are summarized in
<xref rid="tbl2" ref-type="table">Table 2</xref>.<table-wrap position="float" id="tbl2"><label>Table 2</label><caption><p>Selected SARS infection control practices at the time of visit for hospitals investigated by mobile teams in Asia, March and April 2003</p></caption><table frame="hsides" rules="groups"><thead><tr><th>Infection control practices</th><th>Frequency</th><th>%</th></tr></thead><tbody><tr><td>Administrative Measures</td><td></td><td></td></tr><tr><td> Written ICP protocol for SARS</td><td align="char">7/20</td><td align="char">35</td></tr><tr><td> Triage and segregation of possible SARS case patient</td><td align="char">9/20</td><td align="char">45</td></tr><tr><td> Patient with SARS admitted to a separate ward from patients without SARS</td><td align="char">6/20</td><td align="char">30</td></tr><tr><td> Traffic restricted outside of patient's room</td><td align="char">10/20</td><td align="char">50</td></tr><tr><td> Hospital policy prohibited visitors from patient room</td><td align="char">11/20</td><td align="char">55</td></tr><tr><td> Visitors observed wearing full PPE entering patient room</td><td align="char">3/11<xref rid="tblfn1" ref-type="table-fn">∗</xref></td><td align="char">27</td></tr><tr><td> Visitors observed wearing only a surgical mask entering patient room</td><td align="char">5/11<xref rid="tblfn1" ref-type="table-fn">∗</xref></td><td align="char">45</td></tr><tr><td> Visitors observed wearing PPE when entering patient room</td><td align="char">8/11<xref rid="tblfn1" ref-type="table-fn">∗</xref></td><td align="char">73</td></tr><tr><td>Environmental Engineering Measures</td><td></td><td></td></tr><tr><td> Private room for SARS case patients</td><td align="char">20/20</td><td align="char">100</td></tr><tr><td> Hand-washing facilities immediately outside patient room</td><td align="char">9/20</td><td align="char">45</td></tr><tr><td> Separate dressing area for PPE and anteroom</td><td align="char">8/19<xref rid="tblfn2" ref-type="table-fn">†</xref></td><td align="char">42</td></tr><tr><td> Negative air pressure at patient door documented by mobile team</td><td align="char">10/16<xref rid="tblfn2" ref-type="table-fn">†</xref></td><td align="char">63</td></tr><tr><td> HEPA filtration of air from isolation room</td><td align="char">7/20</td><td align="char">35</td></tr><tr><td> Laboratory equipped with biologic safety cabinet</td><td align="char">17/20</td><td align="char">85</td></tr><tr><td>Personal Protective Equipment</td><td></td><td></td></tr><tr><td> Hospital staff observed using N-95 or better respirator</td><td align="char">19/20</td><td align="char">95</td></tr><tr><td> Hospital staff observed using eye protection</td><td align="char">15/20</td><td align="char">75</td></tr><tr><td> Hospital staff observed using single gown with apron or double gowns</td><td align="char">10/20</td><td align="char">50</td></tr><tr><td> Hospital staff observed using double gloves</td><td align="char">13/20</td><td align="char">65</td></tr><tr><td> Hospital staff observed using head and foot covers</td><td align="char">8/20</td><td align="char">40</td></tr></tbody></table><table-wrap-foot><fn><p><italic>SARS</italic>, Severe acute respiratory syndrome; <italic>ICP</italic>, infection control practices; <italic>PPE</italic>, personal protective equipment; <italic>HEPA</italic>, high-efficiency particulate air.</p></fn></table-wrap-foot><table-wrap-foot><fn id="tblfn1"><label>∗</label><p>Among hospitals with visitors observed in patient rooms.</p></fn></table-wrap-foot><table-wrap-foot><fn id="tblfn2"><label>†</label><p>Among hospitals with data reported.</p></fn></table-wrap-foot></table-wrap></p><sec id="sec3.1"><title>Administrative measures</title><p>Hospitals did not consistently have written policies for SARS infection control practices, triage of patients with possible SARS, and visitation requirements to rooms of patients with possible SARS. Even when available, the policies were not consistently applied. For example, 2 of the 9 hospitals with written protocols on SARS triage admitted patients with possible SARS infection directly to the regular ward before being evaluated and isolated.</p><p>Although 11 hospitals had policies prohibiting visitors from the room of a patient with SARS, 2 of these hospitals allowed visitors to enter the patient's room wearing surgical masks but no other PPE. Of the 11 hospitals in which mobile teams observed visitors in patient rooms (regardless of hospital policy), only 3 (27%) hospitals required the visitors to wear the same PPE that hospital personnel used. In one of these hospitals, visitors occasionally removed PPE once inside the patient's room. Thus, 11 (55%) hospitals effectively implemented WHO recommendations to restrict visitors from patient rooms or to require that visitors wear appropriate PPE in patient rooms.<xref rid="bib14" ref-type="bibr"><sup>14</sup></xref></p></sec><sec id="sec3.2"><title>Environmental engineering measures</title><p>In half of the hospitals, hand-washing facilities (hand-washing basin with soap, clean water, and clean drying towels) were available immediately outside the patient's room or anteroom. In most remaining hospitals, hand-washing facilities were at a location distant from the patient's room, such as the nursing station. One hospital lacked access to running water for several hours per day.</p><p>Mobile teams encountered various hospital settings (
<xref rid="fig1" ref-type="fig">Fig 1</xref>), from rural hospitals with patient rooms open to outside air circulation (<xref rid="fig1" ref-type="fig">Fig 1A and 1B</xref>) to hospitals with negative-pressure isolation rooms and high-efficiency particulate air (HEPA)-filtered exhaust (<xref rid="fig1" ref-type="fig">Fig 1D</xref>). When adequate facilities were not available, staff often implemented resourceful measures to improve on existing facilities. For example, some hospitals were able to create a makeshift anteroom by erecting glass walls in the hallway directly outside of the patient's room (<xref rid="fig1" ref-type="fig">Fig 1C</xref>). Hospital staff often created negative pressure relative to the hallway by using room fans to draw air out of the patient's window to an outside area without traffic.<fig id="fig1"><label>Fig 1</label><caption><p>Photographs depicting a range of isolation settings for patients with severe acute respiratory syndrome (SARS) in hospitals visited by mobile SARS containment teams in Asia. (A) An anteroom that opens out to an open-air corridor in a hospital in Vientiane, Laos. : (1) Demonstration of the donning of personal protective equipment in an anteroom that opens to an open-air outside corridor that connects patient rooms on the ward. (B) Typical open-air ward in a rural hospital in Thailand. (2) Open doors leading from the open-air lobby to the patient ward. The open construction allows for cool ventilation but presents challenges to assuring patient isolation and negative pressure rooms. (C) Makeshift negative-pressure isolation room and anteroom in a hospital in Bangkok, Thailand. (3) Medical staff, wearing minimal protective equipment, monitor care of a patient with SARS by looking through glass walls separating the nursing station from the anteroom and patient room. (4) Recently installed reinforcement bars and glass converting the hallway between the nursing station and the patient's room into an enclosed anteroom. (5) Window fan directing air flow from the patient's room to an untrafficked area outside. (6) In the patient isolation room, a nurse wearing personal protective equipment that includes a powered air-purifying respirator while caring for a patient with confirmed SARS. (D) Negative-pressure isolation room with high-efficiency particulate air filtration in Ilan, Taiwan. (7) Separate gauges measure air pressure in the anteroom and patient isolation room. (8) Door leading into the anteroom. On the other side, a closed door opens into the patient isolation room. (9) Closed double doors opening directly into the patient room.</p></caption><graphic xlink:href="gr1"></graphic></fig></p><p>All 20 hospitals had private rooms for SARS case patients. Thirteen (65%) hospitals already had or were able to create an anteroom for the safe donning and removal of PPE, although, in one hospital, more than 1 SARS isolation room adjoined the same anteroom. Most hospitals attempted to create negative air pressure in SARS isolation rooms by using existing facilities or makeshift approaches, but, at the time of the visit, only 10 (63%) of 16 hospitals had effectively done so.</p><p>Although hospitals used the above approaches to separate patients with SARS from other patients, more than half of the hospitals admitted patients with and without SARS to the same ward. At 4 (29%) of these 14 hospitals, mobile teams demonstrated neutral or positive pressure at the door of the patient's room.</p></sec><sec id="sec3.3"><title>Personal protective equipment</title><p>The use and availability of PPE varied among the visited hospitals. All hospitals, except 1, had N-95 or better respirators in stock, although some hospitals had limited supplies. Only 3 (15%) hospitals had access to respirators with better than 95% filter efficiency. All hospitals used at least 1 layer of protective gown, ranging from washable cloth gowns to disposable paper gowns; in half of the hospitals, staff routinely used a single-layer gown with an apron or double-layered gowns. Few hospitals had access to eye protection, head covers, or foot protection. When used, the type of eye protection varied and included protective glasses, safety goggles, face shields, and protective hoods.</p><p>In 6 (30%) hospitals, staff members were observed using the minimal personal protective equipment recommended by WHO (<xref rid="tbl1" ref-type="table">Table 1</xref>).<xref rid="bib14" ref-type="bibr"><sup>14</sup></xref> In the other hospitals, appropriate footwear and an apron were the 2 most frequently missing components of WHO-recommended PPE. At one hospital, staff members used plastic garbage bags secured over each foot with tape or string as an alternative to disposable foot covers.</p></sec><sec id="sec3.4"><title>Overall results</title><p>At the time of mobile team visits, 5 (25%) hospitals implemented WHO recommendations<xref rid="bib14" ref-type="bibr"><sup>14</sup></xref> of private negative-pressure isolation rooms, minimal PPE for all staff entering the patient's room, and effective visitor policies (visitors restricted from the patient room or required to wear personal protective equipment).</p></sec></sec><sec id="sec4"><title>Discussion</title><p>The dramatic spread of SARS in Asia posed formidable new challenges to infection control in hospitals evaluating patients for SARS. Despite limited resources, hospital staff members responded courageously with several resourceful approaches. However, as measured against current recommendations on the infection control and containment of SARS, 75% of hospitals visited did not implement recommended practices at an early stage of the outbreak.</p><p>During the time of mobile team investigations, scientific knowledge about the transmission of SARS was limited, complicating infection control efforts among affected hospitals. Both CDC and WHO advised droplet, contact, and airborne transmission precautions, but specific recommendations changed over time. Our findings indicate that the implementation of recommended infection control practices and the available resources for infection control also varied among the hospitals visited.</p><p>As seen in the first reported outbreaks, health care workers are at higher risk for infection with SARS.<xref rid="bib5" ref-type="bibr">5.</xref>, <xref rid="bib17" ref-type="bibr">17.</xref> Worldwide, the proportion of probable SARS cases that were health care workers was 21%, with a range of 0% in the United States and other countries to 57% in Vietnam.<xref rid="bib12" ref-type="bibr"><sup>12</sup></xref> Although recent reports suggest that infection control practices can be effective in some settings,<xref rid="bib18" ref-type="bibr">18.</xref>, <xref rid="bib19" ref-type="bibr">19.</xref> outbreaks have been documented among protected health care workers.<xref rid="bib20" ref-type="bibr"><sup>20</sup></xref> Prior to our findings presented here, few reports have addressed differences in policies and practices among affected hospitals, which might explain differences in infection control effectiveness among institutions and countries. More research also is needed on the effectiveness of hospital policies for triage and visitor restrictions; staff training and education; patient placement in negative air pressure rooms; 2-stage removal of PPE using anterooms or secondary staging areas; and the use of specific articles of PPE, such as eye protection, head covers, and foot covers. Such knowledge will help hospitals prioritize resources most effectively, especially when resources are limited.</p><p>Mobile teams encountered a diverse range of hospitals settings, highlighting the importance of adapting existing infection control guidance in a way that could be practically implemented by each institution. Some facilities existed or could be quickly built to care adequately for SARS-infected patients in Asia. In one Bangkok hospital, a makeshift negative-pressure isolation room with anteroom was constructed from existing facilities in less than 1 day. Observing strict infection control practices, approximately 70 health care workers were potentially exposed to a patient in whom SARS-CoV infection was confirmed by culture, polymerase chain reaction assay, and seroconversion.<xref rid="bib1" ref-type="bibr"><sup>1</sup></xref> None of these health care workers have reported subsequent infection with SARS (personal communication, Dr. Achara Chavavanich, 2003). Reports of creative approaches to infection control are encouraging and suggest that strict adherence to a high standard of droplet, contact, and airborne transmission precautions can effectively protect health care workers at high risk.</p><p>The findings in this analysis are subject to several limitations. First, the hospitals included in this analysis are a small sample and might not be representative of all hospitals caring for patients with possible SARS infection. Furthermore, mobile teams did not visit each hospital reporting SARS cases, either because staff was not available or because the hospital was not accessible. In addition, our findings describe infection control practices during a single mobile team visit and during an early period in the SARS outbreak. Our findings do not reflect changes in practice that might have occurred over the course of the outbreak or as infection control knowledge and recommendations evolved. For example, not all national health departments initially recommended airborne precautions for SARS infection control.</p><p>Although infection control in hospitals is made up of both administrative measures and physical controls, our observations of infection control practices indicated that basic universal precautions and assessment of their actual practice require increased attention at some facilities. Development of administrative measures such as triage of patients with possible SARS, visitor policies, and use of PPE do not require a large investment of material resources and can be applied to both developed and less developed settings. However, successful implementation of these measures requires prioritization of human resources toward training, health education, and health policy and administration.</p><p>Given the disparate allocation of infection control resources within and among SARS-affected countries, mobile teams might be effective mechanisms to assess infection control practices at hospitals. Mobile teams can focus infection control resources to hospitals actively evaluating patients suspected of SARS infection and provide specific training and recommendations that are appropriate to a hospital's setting and resources. On-site assessment and interventions can actively supplement recommendations and information that have been disseminated passively. Further follow-up and evaluation are needed to assess whether mobile teams improve implementation of infection control recommendations at targeted hospitals. In many facilities, a single evaluation visit or training might not be sufficient to ensure safe infection control practices, and a long-term mechanism for supervision and assessment of quality control could be useful. Unfortunately, resources are limited, and reevaluation of hospitals since the 2003 epidemic has not been done.</p><p>We found evidence of a gap between the recommendations and practice of infection control in some Asian hospitals, indicating the need for ongoing training and monitoring as a component of infection control in each hospital evaluating patients for SARS. As more is known about the transmission of SARS-CoV infections, infection control practices at hospitals evaluating patients for SARS will need to evolve. 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Washington; July 30, 2003.</mixed-citation></ref></ref-list><sec id="app1"><title>Sars mobile response team investigators</title><p>Yongjua Laosiritaworn, MD, International Field Epidemiology Training Program—Thailand, Ministry of Public Health, Nonthaburi, Thailand; Jiunn-Shyan Julian Wu, MS, Taiwan Center for Disease Control, Department of Health, Taipei, Taiwan; Ubolrat Narueponjirakul, MSc, Bureau of Epidemiology, Ministry of Public Health, Nonthaburi, Thailand; Donald Dah-Shyang Jiang, PhD, MS, Taiwan Center for Disease Control, Department of Health, Taipei, Taiwan; Supalert Nedsuwan, MD, Bureau of Epidemiology, Ministry of Public Health, Nonthaburi, Thailand; Chuleeporn Jiraphongsa, MD, International Field Epidemiology Training Program—Thailand, Ministry of Public Health, Nonthaburi, Thailand; Tamara Fisk, MD, Emory University School of Medicine, Atlanta, GA; Sunisa Levine, MD, International Emerging Infections Program, Thailand Ministry of Public Health—US CDC Collaboration, Nonthaburi, Thailand; Mark Simmerman, MS, International Emerging Infections Program, Thailand Ministry of Public Health—US CDC Collaboration, Nonthaburi, Thailand; Michael O'Reilly, MD, MPH, Epidemic Intelligence Service assigned to the Division of Viral and Rickettsial Diseases, Centers for Disease Control and Prevention, Atlanta, GA; Sonja J. Olsen, PhD, International Emerging Infections Program, Thailand Ministry of Public Health—US CDC Collaboration, Nonthaburi, Thailand; and Michael Martin, MD, MPH, Thailand Ministry of Public Health—US CDC Collaboration, Nonthaburi, Thailand.</p></sec><ack><p>The authors thank the clinical staff at the 20 hospitals in Lao PDR, Taiwan, and Thailand for their dedication; Mei Shang Ho, MD, for contributions on mobile SARS containment teams; and Julie Magri, MD, MPH, for critical review of the manuscript.</p></ack></back></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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