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

Comportamiento alimenticio de Rhodnius robustus Larrousse, 1927 (Hemiptera, Reduviidae) en condiciones de laboratorio

“…Además, estas especies son importantes porque pueden reemplazar a las especies domicliadas después que estas han sido eliminadas, como se registró en Brasil (15), o pueden contaminar la comida o enseres utilizados en el proceso de los alimentos y dar lugar a brotes, como los ilustrados en la literatura científica en los últimos años. (5,6,28,(31)(32)(33)(34). Además de la eficacia reproductiva de estos triatominos, cuyo ciclo biológico es más corto, al ser alimentados con sangre humana los resultados obtenidos sugieren una mayor competencia vectorial que la de otras especies del género Rhodnius.…”

Re-infestation of houses by Triatoma dimidiata after intra-domicile insecticide application in the Yucatán peninsula, Mexico

“…This discrepancy may be due to the presence of other infested houses close to the sprayed ones that may have served as a source of re-infestation, and/or to a higher level of house colonization associated with lower dispersal of T. dimidiata in Central America compared to that of Yucatán. In fact, peridomestic and sylvatic populations are being increasingly involved in the re-infestation of domiciles following control programs (Gürtler et al 1999), as well as in the transmission of T. cruzi to humans in the absence of house colonization by triatomines (Coura et al 1994(Coura et al , 1999(Coura et al , 2002. As suggested by a few studies on triatomine dispersal, their flying capacity may have been somewhat underestimated (Schofield et al , 1992, and need to be assessed more carefully.…”

“…House infestation was evaluated before insecticide spraying through a timed manual search for triatomines (Gürtler et al 1999) performed by research personnel in domestic (inside houses), peridomestic (within 50 m around houses), and sylvatic habitats (more than 500 m away from the villages). Teams of two researchers performed the manual searches for 30 min in each biotope between 8:00 am and 1:00 pm.…”

Trypanosoma cruzi infection in Triatoma infestans and other triatomines: long-term effects of a control program in rural northwestern Argentina

“…Previous articles described the area and its history of infestation by T. infestans (5,11). Amamá is located on a paved road, 6-10 km from the other villages.…”

“…In a five-year follow-up of rural villages in Santiago del Estero after a single massive spray of deltamethrin and selective treatments thereafter, T. infestans was not eliminated locally but its abundance was reduced to very low levels in bedroom areas (4,5). Peridomestic sites were the principal source of T. infestans and the origin of domiciliary reinfestations.…”