Volume 32, Issue 6
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



A total of 46 stocks were isolated from naturally infected mammals and triatomine vectors. Twenty-two stocks were from the common opossum (), one from the brown “4-eyed” opossum (), one from the anteater (), one from the coati (), seven from and 14 from . Two stocks were also isolated from recently fed sandflies ( sp., Shannoni group). The stocks were identified as on the basis of natural or experimental salivary gland infections in , inoculative (anterior station) transmission to mice, morphological parameters in parasitemic mice and comparisons of isozyme profiles with a known stock of isolated from man. Three other trypanosome stocks from and the three-toed sloth () were morphologically similar to in culture but had quite different isozyme profiles and were not identified. It is concluded that is widely distributed in Amazonas, Pará and Rondonia States of Brazil, and probably extends into other regions where and are known to occur. is light-attracted into houses and occasionally transmits Chagas' disease to man. It is likely that is also occasionally transmitted to man in the Amazon basin.


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  • Accepted : 26 May 1983

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