1921
Volume 75, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645

Abstract

Blood-feeding obtained its fills from immune chickens in 15 min, but it needed 40 min for feeding upon non-immune chickens. High-titer specific IgGs and skin reactivity against saliva antigens were elicited in immune chickens. Fluorescence-labeled leukocytes from non-immune or immune chickens were used to determine sources of blood drawn by equal numbers of triatomines distributed in separate compartments of a hut-like box. It was shown that 64.4 ± 4.7% of the reduviids were captured in the immune chicken room; 35.6 ± 4.5% were present in the non-immune chicken dwelling, and these differences were statistically significant ( < 0.001). Furthermore, feeding upon immune birds reached the adult stage 40 days before those feeding upon non-immune birds, and differences were statistically significant. These results appear to have a broad epidemiologic significance as for spreading enzootics; hence, the immunologic status of vertebrate host populations appears to favor as the main transmitter of .

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2006-11-01
2017-11-24
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  • Received : 23 Mar 2006
  • Accepted : 13 Jun 2006

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