A comparison of sampling techniques for domestic populations of Triatominae

Abstract

Six methods of sampling domestic populations of Triatoma infestans (Klug in Brazil have been studied. The results suggest that where bug densities are low, the Gomez-Nuñez box may be used, but with higher bug densities withdrawal or removal collecting allows a direct estimation of the size of the bug population. The number of samples to be taken in removal collections depends upon the density of the bug population and the degree of accuracy required.

Active transmission of human chagas disease in Colima Mexico

“…In some rural localities, the number of samples was relatively high, due to the fact that several rural communities, dispersed within a radius of 5 km, were included in the same locality. In each dwelling, an entomological survey was conducted in search of triatominae, following the hour-man-house method proposed by Schofield (1978). The collected specimens were classified according to the criteria set by Lent and Wygodzinski (1979).…”

Presence of Triatominae (Hemiptera, Reduviidae) and Risk of Transmission of Chagas Disease in Colima, México

“…The sampling technique consisted in direct search of bugs following the method proposed by Schofield (1978) of hour-man-house, in each dwelling two people were employed during 30 min approximately, depending on the house size. Adding to the manual collection, in 53 houses a sensor type box was placed, following specifications by Wisnivesky et al (1987) which were left for 25 to 35 days and in 12 houses sticky, mouse baited traps were placed.…”

The evolution of Chagas disease (American Trypanosomiasis) control after 90 years since Carlos Chagas discovery

“…The attack phase generally involves large-scale spraying of all premises in the target area, regardless of whether or not an individual house is known to be infested. This is because available sampling methods are imprecise, and may not detect low-density triatomine populations (Schofield 1978, Gurtler et al 1993. Householders are advised to remove all foodstuffs and animals, and asked to pull furniture away from the walls.…”