title: The Importance of Persistence.
authors.affiliation: University of Pennsylvania and Vaxconsult, Doylestown.
authors.forename: Stanley A
authors.initials: SA
authors.lastname: Plotkin
mesh_terms: D001886:Bordetella pertussis; D006801:Humans; D007239:Infections; D018417:Th1 Cells; D058504:Th17 Cells; D014917:Whooping Cough
keywords: Th1 response; Th17 response; pertussis; waning immunity