title: Malaria epidemiology in the State of Piauí, Northeastern Brazil: a retrospective study with secondary data.
abstract: INTRODUCTION Malaria is not considered endemic in State of Piauí. METHODS Malaria epidemiology was examined using surveillance data.
  
  
  RESULTS
  During 2002-2013, of the 484 cases of malaria, 217 were classified as probably acquired in Piauí, most frequently in the Campo Largo, Buriti dos Lopes, and Luzilândia municipalities, and 267 were considered probably imported, from the States of Pará, Maranhão, Amazonas, Roraima, and Rondônia. Probably-imported cases occurred throughout the year, while 80.2% of the probably-acquired cases occurred in April-August, peaking at the end of the rainy season. CONCLUSIONS Malaria surveillance should be intensified. Further ecoepidemiological and entomological studies are needed.
authors.affiliation: Laboratório de Epidemiologia e Sistemática Molecular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Joyce Anny Alves do
authors.initials: JA
authors.lastname: Nascimento
authors.affiliation: Laboratório de Epidemiologia e Sistemática Molecular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Lucas Melo
authors.initials: LM
authors.lastname: Guimarães
authors.affiliation: Laboratório de Epidemiologia e Sistemática Molecular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Filipe Anibal
authors.initials: FA
authors.lastname: Carvalho-Costa
mesh_terms: D000818:Animals; D000852:Anopheles; D001938:Brazil / Q000453:epidemiology; D019353:Endemic Diseases / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D007303:Insect Vectors; D016778:Malaria, Falciparum / Q000453:epidemiology* / Q000635:transmission; D016780:Malaria, Vivax / Q000453:epidemiology* / Q000635:transmission; D008297:Male; D012189:Retrospective Studies; D012621:Seasons