EM 632 - Week-5-EfficiencyofQuarantineDuringanEpidemicofSevereAcuteRespiratorySyndrome

EM 632 - Week-5-EfficiencyofQuarantineDuringanEpidemicofSevereAcuteRespiratorySyndrome

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Efficiency of Quarantine During an Epidemic of Severe Acute Respiratory Syndrome - Beijing, China 2003 Posted 11/12/2003 Content During March--July 2003, an epidemic of severe acute respiratory syndrome (SARS) in Beijing, China, accounted for 2,521 probable cases* (attack rate: 19 per 100,000 population). To control the epidemic, public health officials initiated enhanced surveillance, isolation of SARS patients, use of personal protective equipment (PPE) by health- care workers, and quarantine of contacts of known SARS patients. Approximately 30,000 Beijing residents were quarantined in their homes or quarantine sites. To guide future quarantine policy, the Chinese Field Epidemiology Training Program (China FETP) of the Chinese Center for Disease Control and Prevention (China CDC) conducted a survey to estimate the risk for acquiring SARS among quarantined residents of Haidian District (2001 population: 2.24 million), Beijing, in May 2003, 1 month after the epidemic peaked. This report summarizes the results of that survey, which indicate that, as a component of a comprehensive SARS-control program, quarantine should be limited to persons who have contact with an actively ill SARS patient in the home or hospital, allowing for better focus of resources in future outbreaks. The 33 precincts in Haidian District were divided into five locations: north (seven precincts), south (six), west (seven), east (six), and central (seven). From each location, the precinct with the greatest number of persons quarantined was selected based on lists from precinct quarantine officers. The selected precincts had 171 (29%) SARS cases and 1,210 (23%) persons quarantined in the district. Quarantined persons were asked to complete a self- administered questionnaire regarding the reasons for quarantine. Quarantined persons and their contacts were categorized as having SARS according to the criteria released by the Chinese Ministry of Health (CMoH). Persons with probable SARS on quarantine and surveillance lists for the precincts and the district were compared with surveyed persons to verify SARS in quarantined persons and their contacts. In Beijing, contact was defined as 30 minutes' exposure in the following situations to a SARS patient who required quarantine: 1) health-care workers who did not use PPE while evaluating or treating a SARS patient; 2) other persons (e.g., family members) who provided care for a SARS patient; 3) persons who shared the same living quarters as a SARS patient; 4) persons who visited a SARS patient; 5) persons who worked in the same office room
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