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Emerg Infect Dis. 2011 Sep;17(9):1737-9. doi: 10.3201/eid1709.101411.

Pandemic (H1N1) 2009 transmission during presymptomatic phase, Japan.

Author information

1
National Institute of Infectious Diseases, Tokyo, Japan. ygu@nih.go.jp

Abstract

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.

PMID:
21888808
PMCID:
PMC3322057
DOI:
10.3201/eid1709.101411
[Indexed for MEDLINE]
Free PMC Article

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