Pandemic (H1N1) 2009 Transmission during Presymptomatic Phase, Japan
Published Date:Sep 2011
Source:Emerg Infect Dis. 17(9):1737-1739.
Communicable Disease Control
Infectious Disease Incubation Period
Infectious Disease Transmission
Influenza A Virus
Influenza A Virus, H1N1 Subtype
Pandemic (H1N1) 2009
Description:During an epidemiologic investigation of pandemic influenza (H1N1) 2009 virus infection in May 2009 in Osaka, Japan, we found 3 clusters in which virus transmission occurred during the presymptomatic phase. This finding has public health implications because it indicates that viral transmission in communities cannot be prevented solely by isolating symptomatic case-patients.
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