Vector control intervention towards interruption of transmission of Chagas disease by Rhodnius prolixus, main vector in Guatemala
Mem. Inst. Oswaldo Cruz
;
107(7): 877-887, Nov. 2012. ilus, graf, mapas, tab
Article
in English
| LILACS
| ID: lil-656043
ABSTRACT
In Guatemala, the Ministry of Health (MoH) began a vector control project with Japanese cooperation in 2000 to reduce the risk of Chagas disease infection. Rhodnius prolixus is one of the principal vectors and is targeted for elimination. The control method consisted of extensive residual insecticide spraying campaigns, followed by community-based surveillance with selective respraying. Interventions in nine endemic departments identified 317 villages with R. prolixus of 4,417 villages surveyed. Two cycles of residual insecticide spraying covered over 98% of the houses in the identified villages. Fourteen villages reinfestated were all resprayed. Between 2000-2003 and 2008, the number of infested villages decreased from 317 to two and the house infestation rate reduced from 0.86% to 0.0036%. Seroprevalence rates in 2004-2005, when compared with an earlier study in 1998, showed a significant decline from 5.3% to 1.3% among schoolchildren in endemic areas. The total operational cost was US$ 921,815, where the cost ratio between preparatory, attack and surveillance phases was approximately 2121. In 2008, Guatemala was certified for interruption of Chagas disease transmission by R. prolixus. What facilitated the process was existing knowledge in vector control and notable commitment by the MoH, as well as political, managerial and technical support by external stakeholders.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Rhodnius
/
Insect Control
/
Chagas Disease
/
Endemic Diseases
/
Insect Vectors
/
Insecticides
Type of study:
Evaluation studies
/
Prevalence study
/
Risk factors
Limits:
Animals
/
Humans
Country/Region as subject:
Central America
/
Guatemala
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2012
Type:
Article
Affiliation country:
Guatemala
Institution/Affiliation country:
Japan International Cooperation Agency/GT
/
Ministry of Health/GT
/
University of San Carlos/GT
/
World Health Organization/GT
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