Risk Factors for Pandemic (H1N1) 2009 Seroconversion among Adults, Singapore, 2009
Wei-Yen Lim , Cynthia H.J. Chen, Yi Ma, Mark I.C. Chen, Vernon J.M. Lee, Alex R. Cook, Linda W.L. Tan, Norberto Flores Tabo, Ian G. Barr, Lin Cui, Raymond T.P. Lin, Yee Sin Leo, and Kee Seng Chia
Author affiliations: Author affiliations: National University of Singapore, Singapore (W.-Y. Lim, C.H.J. Chen, Y. Ma, M.I.C. Chen, V.J.M. Lee, L.W.L. Tan, N. Flores Tabo, Jr., K.S. Chia); Tan Tock Seng Hospital, Singapore (M.I.C. Chen, Y.S. Leo); Ministry of Defence, Singapore (V.J.M. Lee); National University of Singapore, Singapore (A.R. Cook); World Health Organization Collaborating Centre for Reference and Research on Influenza, Melbourne, Victoria, Australia (I. Barr); Ministry of Health, Singapore (L. Cui, R.T.P. Lin)
Figure 2. Study of seroconversion for pandemic (H1N1) 2009 virus, Singapore, June–September 2009. Public places were as follows: mass entertainment venues (e.g., cinemas, stadiums, and theaters; shopping centers, markets, and supermarkets; restaurants, bars, clubs, and other eating or drinking establishments; places of worship; and other social gatherings with >10 persons. Horizontal lines denote error bars for the estimates.
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