Malaria control in an agro-industrial settlement of Rondônia (Western Amazon Region, Brazil)

Memórias do Instituto Oswaldo Cruz

Juan Miguel Villalobos Salcedo²  Erney Plessmann Camargo¹  Henrique Krieger¹  Luiz H Pereira Da Silva¹  Luis Marcelo Aranha Camargo¹ 

[1] ,Secretaria de Saúde de RondôniaPorto Velho RO ,Brasil

关键词: malaria;    control;    epidemiology;    Plasmodium falciparum;    Plasmodium vivax;    Rondônia;    Amazon Region;   

DOI  :  10.1590/S0074-02762000000200001

来源: SciELO

【 摘 要 】

A malaria control pilot project was developed in the Urupá agro-industrial farm that is situated in the State of Rondônia (Western Amazon Region, Brazil). Around 180 inhabitants had been surveyed for the past five years. The control measures were based on (1) training a community agent to perform on the spot microscopical diagnosis of malaria and to treat the uncomplicated cases of malaria; (2) limiting the use of insecticides to a short period before the high transmission season. This resulted in a significant reduction in the time between the onset of clinical symptoms and specific chemotherapy which fell from 3.5 to 1.3 days. In relation to the previous three reference years the total number of malaria cases was reduced to 50% in the first year and to 25% in the second year. The introduction of these measures coincided with pronounced reduction in the frequency of Plasmodium falciparum infections but this was less marked for P. vivax infections. In the second year of the pilot experiment there was no P. falciparum transmission on the farm. During the last decade there was a general decrease in the endemicity of malaria in the State of Rondônia. The linear regression coefficient values indicate that the decline was more pronounced in Urupá than in the general municipality and that the falciparum malaria API in Urupá farm is significantly lower than in the general municipality of Candeias were the farm is situated.

【 授权许可】

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