title: What is a pandemic?
authors.affiliation: Office of the Director, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892-2520, USA. dmorens@niaid.nih.gov
authors.forename: David M
authors.initials: DM
authors.lastname: Morens
authors.forename: Gregory K
authors.initials: GK
authors.lastname: Folkers
authors.forename: Anthony S
authors.initials: AS
authors.lastname: Fauci
mesh_terms: D003141:Communicable Diseases / Q000453:epidemiology*; D004196:Disease Outbreaks; D014943:Global Health; D006801:Humans; D013997:Time Factors