Presence of Anti-Toxocara Antibodies in Sheep from the State of Mexico

Toxocariasis is a parasitic zoonosis caused by the nematode Toxocara canis, and less frequently Toxocara cati, whose final hosts are the dog and cat, respectively. It is acquired by the ingestion of embryonated parasite eggs; the ingestion of meat from animals carrying cystic larvae plays a central role in this disease. The study was conducted in Ayapango, Mexico. Ninety-two sheep where used, of which 72 were females and 20 males. The total prevalence of anti-Toxocara antibodies was 15.21% (14/92), ranging from 17.24% in the one to six months age group to 14.28% in the group older sheep six months, with a higher percentage in females (19.44%) compared to males (5.0%), with a significant difference between positive males and females older than six months of age (Chi-square test = 4.22, P < 0.05). The prevalence of anti-Toxocara antibodies in sheep suggests that a high number of animals are infected with Toxocara spp. The consumption of meat from paratenic hosts, including sheep, is considered a means of transmission of toxocariasis to humans