Clinical and epidemiological features of pertussis in Salvador, Brazil, 2011–2016
Araújo L, Nunes A, Ferreira V, Cardoso C, Feitosa C, Reis M, Campos L. Clinical and epidemiological features of pertussis in Salvador, Brazil, 2011–2016. PLOS ONE 2020, 15: e0238932. PMID: 32915869, PMCID: PMC7485779, DOI: 10.1371/journal.pone.0238932.Peer-Reviewed Original ResearchConceptsPertussis casesChi-square testUnvaccinated individualsClinical criteriaExact testComplete vaccination scheduleSevere respiratory infectionsPrevention of pertussisPearson's chi-square testFisher's exact testAge group 2Paroxysmal coughRespiratory infectionsVaccination scheduleRetrospective studyEpidemiological featuresLaboratory criteriaVaccination strategiesClinical dataEpidemiological aspectsGroup 2More symptomsCase confirmationNumber of casesBivariate analysis