Epidemiology of Travel-associated Pandemic (H1N1) 2009 Infection in 116 Patients, Singapore
Pratik Mukherjee, Poh Lian Lim , Angela Chow, Timothy Barkham, Eillyne Seow, Mar Kyaw Win, Arlene Chua, Yee Sin Leo, and Mark I-Cheng Chen
Author affiliations: Tan Tock Seng Hospital, Singapore (P. Mukherjee, P.L. Lim, A. Chow, T. Barkham, E. Seow, M.K. Win, A. Chua, Y.S. Leo, M.I-C. Chen); National University of Singapore, Singapore (A. Chow, M.I-C. Chen); Duke–National University of Singapore Graduate Medical School, Singapore (M.I-C. Chen)
Figure 1. Sources of exposure, by region and country, among 116 patients in Singapore infected with pandemic (H1N1) 2009 virus identified during epidemiologic weeks 21–25, 2009. A) Asia compared with other regions; B) the Philippines; C) Thailand; D) Indonesia; E) other Asian countries. Week 21, May 24–30; week 22, May 30–June 6; week 23, June 7–13; week 24, June 14–20; week 25, June 21–27.
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