title: [Pertussis].
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D011044:Poland; D014917:Whooping Cough / Q000453:epidemiology* / Q000401:mortality
vernacular_title: Krztusiec