Volume 26, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



To determine whether a low preference for human blood by Stal, 1859, the only known vector of Chagas' disease in Yucatan, Mexico, would account for the low prevalence of antibodies to in man in the area, the intestinal contents of 924 bugs were tested against antisera to blood antigens of chicken, opossum, dog, bat, monkey, pig, goat, rabbit, horse, human, rat, ox, cat, and armadillo. Although the chicken was the primary host, man was fed upon frequently; thus, the hypothesis was rejected. Other explanations must be found for the relative lack of antibodies against in humans in Yucatan.


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