title: [Field epidemiology].
authors.affiliation: China Center for Disease Prevention and Control, Beijing 100050, China
authors.forename: Guang
authors.initials: G
authors.lastname: Zeng
mesh_terms: D002681:China / Q000453:epidemiology; D003140:Communicable Disease Control / Q000379:methods* / Q000458:organization & administration*; D003141:Communicable Diseases / Q000453:epidemiology*; D004196:Disease Outbreaks / Q000517:prevention & control*; D004784:Environmental Monitoring / Q000379:methods; D004812:Epidemiologic Methods; D062665:Epidemiological Monitoring; D006801:Humans; D018570:Risk Assessment / Q000379:methods; D012307:Risk Factors