title: Seroprevalence of Toxoplasma gondii in pigs, sheep, goats, and cattle from Grenada and Carriacou, West Indies.
abstract: Prevalence of Toxoplasma gondii infection in pregnant women in Grenada is considered high. Little is known of the epidemiology of T. gondii infection in Caribbean Islands. Serum samples of 750 food animals in Grenada and Carriacou were tested for antibodies to T. gondii by the modified agglutination test (MAT). Antibodies to T. gondii (MAT, 1∶25 or higher) were found in 23.1% of 247 pigs, 44.1% of 204 sheep, 42.8% of 180 goats, and 8.4% of 119 cattle. Seroprevalence increased with age, indicating postnatal acquisition of T. gondii. Antibody titers of 1∶200 or higher were present in 65 of 90 seropositive sheep, 61 of 77 seropositive goats, and 23 of 57 seropositive pigs. However, none of the cattle had a MAT titer of 1∶200, suggesting that bovines are a poor host for T. gondii. Results indicate that pigs, sheep, and goats could be important sources of T. gondii infection if their meat is consumed undercooked.
authors.affiliation: Pathobiology Academic Program, School of Veterinary Medicine, St. George's University, Grenada, West Indies.
authors.forename: A
authors.initials: A
authors.lastname: Chikweto
authors.forename: S
authors.initials: S
authors.lastname: Kumthekar
authors.forename: K
authors.initials: K
authors.lastname: Tiwari
authors.forename: B
authors.initials: B
authors.lastname: Nyack
authors.forename: M S
authors.initials: MS
authors.lastname: Deokar
authors.forename: G
authors.initials: G
authors.lastname: Stratton
authors.forename: C N L
authors.initials: CN
authors.lastname: Macpherson
authors.forename: R N
authors.initials: RN
authors.lastname: Sharma
authors.forename: J P
authors.initials: JP
authors.lastname: Dubey
mesh_terms: D000818:Animals; D000913:Antibodies, Protozoan / Q000097:blood; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000469:parasitology / Q000635:transmission; D015511:Goat Diseases / Q000453:epidemiology* / Q000469:parasitology / Q000635:transmission; D006041:Goats; D019425:Grenada / Q000453:epidemiology; D008460:Meat / Q000469:parasitology; D016036:Seroepidemiologic Studies; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology* / Q000469:parasitology / Q000635:transmission; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology* / Q000469:parasitology / Q000635:transmission; D014122:Toxoplasma / Q000276:immunology*; D014124:Toxoplasmosis, Animal / Q000453:epidemiology* / Q000635:transmission
chemical_list: D000913:Antibodies, Protozoan