Seroprevalence of Toxoplasma gondii in cats from St. Kitts, West Indies.

The prevalence of antibodies to Toxoplasma gondii was determined in sera from 106 domestic cats from St. Kitts, West Indies. Using a modified agglutination test, antibodies to this parasite were found in 90 (84.9%) of the cats, with titers of 1:20 in 23 cats, 1:40 in 34 cats, 1:80 in 18 cats, 1:160 in 2 cats, 1:320 in 1 cat, and 1:1,280 or higher in 11 cats. This is the first report of the prevalence of T. gondii infections in cats on St. Kitts and suggests widespread contamination of the environment with oocysts.