Chagas' Disease: Prevention, National Chagas’ Control Program of Brazil

on 10.12.08 with 0 comments

This programme was begun in Brazil in 1975. The intention was to reach the whole country and the strategy included spraying houses with insecticides. In Sao Paulo the vector Triatoma infestans was eliminated in 1982. Between 1983 and 1993 reductions of house infestation, ranging between 100% (Mato Grosso) and 80% (Goias) were observed in 8 of the 11 endemic states. In the states Bahia, Tocantins and Rio Grande do Sul the results were less spectacular. Nevertheless further successes are expected in the coming years. The total incidence of seropositivity in children from 7-14 years fell by 96% between 1980 and 1994. In 1998 there was still one T. infestans per 10,000 houses. A much higher frequency would be required to maintain transmission of T. cruzi. It is reasonable to expect the transmission will be interrupted.

Category: Medicine Notes



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