[A few think deeply of the influenza A (H1N1) on field epidemiology].
Zhang
Shun-xiang
SX
Shenzhen Center for Disease Control and Prevention, Shenzhen 518020, China. zhangsx@szcdc.net
D003140:Communicable Disease Control; D004784:Environmental Monitoring; D062665:Epidemiological Monitoring; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control*