Volume 17, Number 9—September 2011
Dispatch
Pandemic (H1N1) 2009 Transmission during Presymptomatic Phase, Japan
Figure

Figure. Three clusters of pandemic (H1N1) 2009 presymptomatic transmission in May 2009 in Osaka, Japan. All cases were confirmed as pandemic (H1N1) 2009 virus infection by real-time reverse transcription PCR. Squares indicate male case-patients, and circles indicate female case-patients. Colors of the squares and circles denote the similar or different schools the students attended.
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