TY - JOUR AU - Gu, Yoshiaki AU - Komiya, Nobuhiro AU - Kamiya, Hajime AU - Yasui, Yoshinori AU - Taniguchi, Kiyosu AU - Okabe, Nobuhiko T1 - Pandemic (H1N1) 2009 Transmission during Presymptomatic Phase, Japan T2 - Emerging Infectious Disease journal PY - 2011 VL - 17 IS - 9 SP - 1737 SN - 1080-6059 AB - 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. KW - Influenza KW - human KW - influenza A virus KW - viruses KW - H1N1 subtype KW - pandemic (H1N1) 2009 KW - disease outbreaks KW - infectious disease transmission KW - infectious disease incubation period KW - contact tracing KW - dispatch KW - Japan DO - 10.3201/eid1709.101411 UR - https://wwwnc.cdc.gov/eid/article/17/9/10-1411_article ER - End of Reference