Monitoring house reinfestation by triatomine vectors of Chagas disease: a comparative trial of detection methods during a four-year follow-up.

GURTLER RE; CECERE MC; CANALE MD; CASTAÑERA MB; CHUIT R; COHEN J

ACTA TROPICA

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 1999 p. 213 - 234

0001-706X

Domestic reinfestations by triatomine bugs were monitored after application of deltamethrin and apparent elimination of Triatoma infestans in Amama´ and other nearby rural villages, north-west Argentina, from 1992 to 1996. The five methods used were sensor boxes, sheets of pink typing-paper, timed manual catches by a skilled three-person team aided by a flushing-out agent, collections by house-dwellers, and knockdown using insecticide fumigant canisters. In bedrooms, house-dwellers collected T. infestans significantly more frequently than the flushing-out method, but the reverse occurred in peridomestic sites. Both methods and sensor boxes revealed the frequent invasion of adult Triatoma guasayana and T. infestans, but neither T. guasayana nor Triatoma sordida colonized bedroom areas in spite of their rising abundance in nearby peridomestic sites. Sensor boxes were significantly more sensitive than the matched paper-sheets in three of five cross-sectional surveys. On average,