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The impact of imported malaria by gold miners in Roraima: characterizing the spatial dynamics of autochthonous and imported malaria in an urban region of Boa Vista
Louzada, Jaime; de Almeida, Nathália Coelho Vargas; de Araujo, Joao Luiz Pereira; Silva, Júlio; Carvalho, Thiago M; Department of BiologyEscalante, Ananias A; Laboratório de ImunoparasitologiaOliveira-Ferreira, Joseli.
  • Louzada, Jaime; Universidade Federal de Roraima. Boa Vista. BR
  • de Almeida, Nathália Coelho Vargas; Secretaria de Saúde de Roraima. Coordenação Geral de Vigilância em Saúde. Boa Vista. BR
  • de Araujo, Joao Luiz Pereira; Secretaria de Vigilância em Saúde do Ministério da Saúde. BR
  • Silva, Júlio; Fundação Oswaldo Cruz-Fiocruz. Instituto Nacional de Infectologia Evandro Chagas. Rio de Janeiro. BR
  • Carvalho, Thiago M; Universidade Federal de Roraima. Boa Vista. BR
  • Department of BiologyEscalante, Ananias A; Temple University. Institute for Genomics and Evolutionary Medicine. Department of BiologyEscalante, Ananias A. Philadelphia. US
  • Laboratório de ImunoparasitologiaOliveira-Ferreira, Joseli; Fundação Oswaldo Cruz-Fiocruz. Instituto Oswaldo Cruz. Laboratório de ImunoparasitologiaOliveira-Ferreira, Joseli. Rio de Janeiro. BR
Mem. Inst. Oswaldo Cruz ; 115: e200043, 2020. tab, graf
Article in English | LILACS, SES-SP | ID: biblio-1135250
ABSTRACT
BACKGROUND The number of malaria cases in Roraima nearly tripled from 2016 to 2018. The capital, Boa Vista, considered a low-risk area for malaria transmission, reported an increasing number of autochthonous and imported cases. OBJECTIVES This study describes a spatial analysis on malaria cases in an urban region of Boa Vista, which sought to identify the autochthonous and imported cases and associated them with Anopheles habitats and the potential risk of local transmission. METHODS In a cross-sectional study at the Polyclinic Cosme e Silva, 520 individuals were interviewed and diagnosed with malaria by microscopic examination. Using a global positional system, the locations of malaria cases by type and origin and the breeding sites of anopheline vectors were mapped and the risk of malaria transmission was evaluated by spatial point pattern analysis. FINDINGS Malaria was detected in 57.5% of the individuals and there was a disproportionate number of imported cases (90.6%) linked to Brazilian coming from gold mining sites in Venezuela and Guyana. MAIN CONCLUSIONS The increase in imported malaria cases circulating in the west region of Boa Vista, where there are positive breeding sites for the main vectors, may represent a potential condition for increased autochthonous malaria transmission in this space.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Plasmodium / Travel / Miners / Mosquito Vectors / Malaria / Anopheles Type of study: Observational study / Prevalence study / Prognostic study / Risk factors Limits: Animals / Female / Humans / Male Country/Region as subject: South America / Brazil / English Caribbean / Guyana / Venezuela Language: English Journal: Mem. Inst. Oswaldo Cruz Year: 2020 Type: Article Institution/Affiliation country: Fundação Oswaldo Cruz-Fiocruz/BR / Secretaria de Saúde de Roraima/BR / Secretaria de Vigilância em Saúde do Ministério da Saúde/BR / Temple University/US / Universidade Federal de Roraima/BR

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Full text: Available Index: LILACS (Americas) Main subject: Plasmodium / Travel / Miners / Mosquito Vectors / Malaria / Anopheles Type of study: Observational study / Prevalence study / Prognostic study / Risk factors Limits: Animals / Female / Humans / Male Country/Region as subject: South America / Brazil / English Caribbean / Guyana / Venezuela Language: English Journal: Mem. Inst. Oswaldo Cruz Year: 2020 Type: Article Institution/Affiliation country: Fundação Oswaldo Cruz-Fiocruz/BR / Secretaria de Saúde de Roraima/BR / Secretaria de Vigilância em Saúde do Ministério da Saúde/BR / Temple University/US / Universidade Federal de Roraima/BR