ArticleMemorias do Instituto Oswaldo Cruz2026
First report of canine Chagas disease on the Caribbean Island of Trinidad.
Article in Memorias do Instituto Oswaldo Cruz, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundChagas disease (CD) is a vector-borne infection caused by Trypanosoma cruzi, a kinetoplastid parasite of mammals. T. cruzi is transmitted by triatomine bugs throughout the Americas and some Caribbean islands. On the Caribbean island of Trinidad, T. cruzi has been isolated from triatomine bugs in several residential areas where dogs are a common pet. However, canine T. cruzi infection in Trinidad has never been studied.
objectivesWe aimed to demonstrate that canine CD does occur in Trinidad through a review of veterinary records from the years 2008-2023.
methodsWe reviewed 3,923 case reports from Trinidad veterinary clinics for canine Chagas cases diagnosed through histological evaluation, necropsy, blood smear evaluation, and/or polymerase chain reactions (PCR).
findingsWe identified 13 confirmed and two suspected canine CD cases. Animal ages ranged from five weeks to 14 years old, with four (27%) being less than one year old, including the pup of a T. cruzi-infected dam. Breed varied, although one-third (5/15) were hounds. Clinical signs ranged from asymptomatic (43%; 6/14) to severely ill with limb paresis (21%; 3/14). Seven of the fifteen (47%) dogs died, and three more (20%) were euthanized. Myocarditis with visible amastigote forms were found in two-thirds (9/15) of dogs. MAIN
conclusionsOur findings highlight a need for increased awareness of CD among dog owners and veterinarians in Trinidad.
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