Gowri Gopalakrishna*, Philip Choo†, Yee Sin Leo†, Boon Keng Tay‡, Yean Teng Lim§, Ali S. Khan¶1, and Chorh Chuan Tan*
Author affiliations: *Ministry of Health, Singapore; †Tan Tock Seng Hospital, Singapore; ‡Singapore General Hospital, Singapore; §National University Hospital, Singapore; ¶Centers for Disease Control and Prevention, Atlanta, Georgia, USA; 1Short-term consultant, Global Outbreak and Alert Response Network (GOARN), World Health Organization
Figure 1. Severe acute respiratory syndrome case-patients infected at three major hospitals, Singapore, February–April 2003. The chart depicts the overall epidemic in each hospital, includes case-patients infected outside the hospital but whose disease origin was linked back to one of the three hospital outbreaks. In Tan Tock Seng Hospital (TTSH), the last case of intrahospital transmission was on April 12. In Singapore General Hospital (SGH), the last case of intrahospital transmission was on April 15. In National University Hospital (NUH), the last case of intrahospital transmission was on April 25. Arrows indicate dates of onsets of the three index cases for each hospital outbreak. Dotted arrow indicates date when full infection control measures (Figure 2) were implemented in TTSH.
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