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[The control of vectorial transmission]
Antônio Carlos Silveira1, João Carlos Pinto Dias
1Divisão Nacional de Doença de Chagas, Divisão Nacional de Epidemiologia, Ministério da Saúde, Brasília, DF, Brazil. atcrs@uol.com.br
Revista Da Sociedade Brasileira De Medicina Tropical
|May 18, 2011
Summary
Brazil
Area of Science:
- Vector-borne disease control
- Epidemiology
- Public health interventions
Context:
- Chagas disease control efforts in Brazil began in 1950.
- Early campaigns (1950-1975) lacked consistent resources and impact.
- A systematic approach with increased resources began in 1975.
Purpose:
- To summarize the history and evolution of Chagas disease vector control in Brazil.
- To highlight the impact of sustained, systematic interventions.
- To underscore the ongoing need for epidemiological surveillance.
Summary:
- Systematic vector control, initiated in 1975, significantly reduced the primary vector (Triatoma infestans) and controlled domiciliary colonization.
- Current Chagas disease transmission is largely residual, involving peridomestic species.
- Risks include the domiciliation of sylvatic vectors and enzootic transmission.
Impact:
- Effective vector control has shifted Chagas disease transmission dynamics in Brazil.
- Sustained efforts are crucial for managing residual and emerging transmission risks.
- Ongoing surveillance is essential to prevent resurgence and new infections.
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