Article
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
Registro en:
LOUZADA, Jaime et al. 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. Memórias do Instituto Oswaldo Cruz, Rio de Janeiro, v. 115, e200043, 10p, 2020.
0074-0276
10.1590/0074-02760200043
1678-8060
Autor
Louzada, Jaime
Almeida, Nathália Coelho Vargas de
Araujo, Joao Luiz Pereira de
Silva, Júlio
Carvalho, Thiago M.
Escalante, Ananias A.
Ferreira, Joseli Oliveira
Resumen
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.