Echinococcus granulosus in animals in northern India.

The prevalence of larval Echinococcus granulosus in buffaloes, sheep and goats and in adult stray and shepherd dogs was studied in northern India. A total of 48.1% of 754 buffaloes, 30.5% of 1215 sheep and 21.0% of 447 goats were found to be infected with this parasite. The prevalence of infection in buffaloes was higher in older animals than in younger animals. The lungs and livers appeared to be the sites of predilection. A high percentage of cysts from buffaloes (71.1%) were sterile, whereas a high percentage (90.0%) of cysts from sheep and goats were fertile. Shepherd dogs showed a higher prevalence of infection than stray dogs and the latter examined near the vicinity of slaughter houses had a higher prevalence of infection than those examined in other parts of the city.