期刊
AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
卷 99, 期 6, 页码 1625-1632出版社
AMER SOC TROP MED & HYGIENE
DOI: 10.4269/ajtmh.18-0099
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资金
- Singapore's National Medical Research Council
- National Services Research [HSRG/0040/2013]
- Singapore Population Health Improvement Centre (SPHERIC), National University Health System
Singapore implements a school closure policy for institutional hand, foot, and mouth disease (HFMD) outbreaks, but there is a lack of empirical evidence on the effect of closure on HFMD transmission. We conducted a retrospective analysis of 197,207 cases of HFMD over the period 2003-2012 at the national level and of 57,502 cases in 10,080 institutional outbreaks over the period 2011-2016 in Singapore. The effects of school closure due to 1) institutional outbreaks, 2) public holidays, and 3) school vacations were assessed using a Bayesian time series modeling approach. School closure was associated with a reduction in HFMD transmission rate. During public holidays, average numbers of secondary cases having onset the week after dropped by 53% (95% credible interval 44-62%), and during school vacations, the number of secondary cases dropped by 7% (95% credible interval 3-10%). Schools being temporarily closed in response to an institutional outbreak reduced the average number of new cases by 1,204 (95% credible interval 1,140-1,297). Despite the positive effect in reducing transmission, the effect of school closure is relatively small and may not justify the routine use of this measure.
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