title: Global surveillance, national surveillance, and SARS.
authors.affiliation: World Health Organization, Geneva, Switzerland. heymannd@who.int
authors.forename: David L
authors.initials: DL
authors.lastname: Heymann
authors.forename: Guénaël
authors.initials: G
authors.lastname: Rodier
mesh_terms: D004196:Disease Outbreaks; D006801:Humans; D011159:Population Surveillance / Q000379:methods*; D045169:Severe Acute Respiratory Syndrome / Q000453:epidemiology*; D014944:World Health Organization