Vaccination with Trypanosoma Rangeli Reduces the Infectiousness of Dogs Experimentally Infected with Trypanosoma Cruzi

Overview

Journal Vaccine

Specialty Allergy & Immunology

Date 2007 Mar 14

PMID 17349724

Citations 14

Authors

Beatriz Basso

Irma Castro

Virginia Introini

Patricia Gil

Carine Truyens

Edgardo Moretti

Affiliations

Soon will be listed here.

Abstract

The goal of this work was to test the efficacy of the vaccination with Trypanosoma rangeli in dogs. Mongrel dogs received three subcutaneous injections of fixed T. rangeli epimastigotes at 6-week intervals. Such immunisation induced antibodies against Trypanosoma cruzi. While both control and immunised dogs developed detectable parasitemia, this was lower and shorter in vaccinated animals. Interestingly, feeding of Triatoma infestans nymphs on vaccinated and chronically infected dogs led to a sharp reduction in the rate of bug infection. These results suggest that it might be possible to reduce the vectorial parasitemia through vaccination of dogs. As dogs are known to play a major role in the domestic cycle of T. cruzi, this might represent a strategy to reduce parasite transmission to humans.

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