Author | Barrett, Toby Vincent | |
Author | Hoff, Rodney | |
Author | Mott, Kenneth E | |
Author | Guedes, F | |
Author | Sherlock, Ítalo Rodrigues de Araújo | |
Access date | 2016-04-15T14:21:03Z | |
Available date | 2016-04-15T14:21:03Z | |
Document date | 1979 | |
Citation | BARRETT, T. V. et al. An outbreak of acute Chagas’s disease in the Sao Francisco Valley region of Bahia, Brazil : triatomine vectors and animal reservoirs of Trypanosoma cruzi. Transactions of The Royal Society of Tropical Medicine and Hygiene, v. 73, n. 6, p. 703-709, 1979 | pt_BR |
ISSN | 0035-9203 | |
URI | https://www.arca.fiocruz.br/handle/icict/13827 | |
Description | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil | pt_BR |
Language | eng | pt_BR |
Publisher | Oxford University Press | pt_BR |
Rights | open access | pt_BR |
Subject in Portuguese | Doença de Chagas | pt_BR |
Subject in Portuguese | Triatoma | pt_BR |
Subject in Portuguese | Triatomíneos | pt_BR |
Subject in Portuguese | Trypanosoma cruzi | pt_BR |
Subject in Portuguese | Panstrongylus | pt_BR |
Subject in Portuguese | Animais | pt_BR |
Subject in Portuguese | Ratos | pt_BR |
Subject in Portuguese | Transmissão | pt_BR |
Title | An outbreak of acute Chagas’s disease in the Sao Francisco Valley region of Bahia, Brazil : triatomine vectors and animal reservoirs of Trypanosoma cruzi | pt_BR |
Type | Article | pt_BR |
Abstract | Following reports of an unusually high incidence
of acute Chagas’s disease and the appearance of
large numbers of Triatoma infesrans in the southwestern
region of the State of Bahia, triatomine
bugs (Hemiptera: Reduviidae) and domestic animals
in one of the affected communities were surveyed
and examined for infection with Trypanosoma cruzi.
Triatoma infestans was prevalent in houses and was
also found in peridomestic habitats. T. sordidu and
T. pseudomaculata occupied peridomestic and
svlvatic habitats and T. brasiliensis was found onlv ,
among rocks far from houses. Panstrongylus megistus,
formerly present in the region, was not found.
Trypanosoma cruzi was detected in 19.5 ‘Iii of
Triatoma infestans, 11.5”,, of T. sordida, 19”,, of
dogs, 29:,, o f cats and 100” u of rats examined. A
dlsproportionate number of early instar bugs were
infected with Trypanosoma cruzi, suggesting that a
rapid increase in the rate of transmission had
recently occurred.
The history of the domestic triatomine fauna of
the region since 1912 is reviewed, and it is proposed
that the relatively recent arrival of Triatoma
infestans initiated a domestic cycle linked to peridomestic
and sylvatic cycles of’ TryDanosoma cruzi
transmission. Increased human mobility, the use of
DDT for malaria control. and drought conditions
are considered as factors which miiht have contributed
to the outbreak of human infection. | pt_BR |
Affilliation | London School of Hygiene and Tropical Medicine. Dept. of Entomology. Keppel Street, London WC | pt_BR |
Affilliation | Harvard School of Public Health. Dept. of Tropical Public Health. Boston, MA, USA | pt_BR |
Affilliation | Universidade Federal da Bahia. Faculdade de Medicina. Salvador, BA, Brasil | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Núcleo de Pesquisas da Bahia. Salvador, BA, Brasil | pt_BR |