Estudo epidemiológico de fontes de alimentação sangüínea dos triatomíneos da fazenda aroeira (Catolé do Rocha, Paraíba) e circunvizinhanças

Abstract

Analisamos a fonte de alimentação sangüínea de 94 triatomíneos (51 Triatoma brasiliensis, 42 T. pseudomaculata e um Rhodnius neglectus) da Fazenda Aroeira, no Município de Catolé do Rocha, no Estado da Paraíba, e de quatro localidades próximas. Observamos positividade para marsupial, homem e ave, respectivamente, de 39,7 , 6,2 e 23,0%. Três insetos da Fazenda Aroeira, positivos para Trypanosoma cruzi, foram positivos para marsupial, só um deles também para outro mamífero. Os marsupiais são a mais importante fonte de T. cruzi para os insetos da área e estes têm pouco contato com o homem.

Indicadores entomológicos de triatomíneos no Estado do Rio Grande do Norte, Brasil

“…In this setting, considering the classification of this species as the main species 13 and considering the high seroprevalence of Chagas' disease, highlighting the Western mesoregion 5 , the role of T. brasiliensis as a vector disseminator of T. cruzi infection is reaffirmed. The species T. pseudomaculata, characteristic of the extradomestic space 30,31 , as in other settings investigated, was predominant in the peridomicile 13,21,22,[31][32][33] , although the number of nymphs captured in the intradomestic environment surpassed that of Ceará 31 , Piauí and Paraíba 21,31 . The condition of occupation of T. pseudomaculata restricted to the peridomicile determines the difficulty for the traditional chemical control, since the insecticides demonstrate a transient effect in a situation in which the habitat corresponds to the extradomestic space, so that reinfestation becomes a common process 24,34 , attributed to the great pressure of recolonization by this species 24 .…”

Oral transmission of Chagas disease from a One Health approach: A systematic review

“…About 180 species of 25 mammal families have been described as potential reservoirs of T. cruzi [27–29]. In outbreaks by oral transmission, the main ones (70%) are different species of marsupial didelphids such as Didelphis (D.) marsupialis , D. aurita , D. albiventris and Marmosa spp., Monodelphis domestica or Caluromys lanatus , which are synanthropic reservoirs (supposing a link between the domestic cycle and the wild cycle) relevant, acting as reservoirs and vectors.…”