Asymptomatic Plasmodium infection in a residual malaria transmission area in the Atlantic Forest region: Implications for elimination
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Citações na Scopus
8
Tipo de produção
article
Data de publicação
2019
Título da Revista
ISSN da Revista
Título do Volume
Editora
SOC BRASILEIRA MEDICINA TROPICAL
Autores
MIGUEL, Renata Bortolasse
ALBUQUERQUE, Hermano Gomes
COURA, Jose Rodrigues
SANTOS, Simone da Silva
SILVA, Sidnei da
MOREIRA, Carlos Jose de Carvalho
SUAREZ-MUTIS, Martha Cecilia
Citação
REVISTA DA SOCIEDADE BRASILEIRA DE MEDICINA TROPICAL, v.52, article ID UNSP e20180537, 9p, 2019
Resumo
Introduction: Elimination of malaria in areas of interrupted transmission warrants careful case assessment to avoid the reintroduction of this disease. Occasional malaria cases are reported among visitors of the Atlantic Forest area of Brazil, while data on residents of this area are scarce. Methods: A sectional study was carried out to examine 324 individuals living in a municipality where autochthonous cases were detected. Results: Asymptomatic Plasmodium infections were detected in 2.8% of the individuals by polymerase chain reaction (PCR), with one case of P. falciparum (0.3%), two cases of P. vivax (0.6%), and six cases of P. malariae (1.9%). The thick blood smears were negative in all individuals. Serological tests performed in 314 subjects were reactive in 11.1%, with 3.5% for P. falciparum and 7.7% for R. vivax. A subsample of 42 reactive individuals for any Plasmodium species showed R. malariae in 30.9% of specimens. Individuals who entered the Atlantic Forest region were 2.7 times more likely to exhibit reactive serology for P. vivax compared with individuals who did not enter this region (p<0.05). Children <15 years had a higher chance of reactive serology for P. falciparum and P. vivax than individuals >= 15 years of age (p<0.05). Individuals living in the Paraiso district had a higher chance of reactive serology for P. vivax compared to other districts (p<0.05). No associations were found between sex, past exposure to malaria, or serological response to antibodies of any Plasmodium species. Conclusions: The implications of these results for the elimination of malaria were discussed.
Palavras-chave
Malaria, Plasmodium infection, Extra-Amazonian region, Elimination, Rio de Janeiro State
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