Prevalence of Linguatula serrata in domestic ruminants in South India.

Linguatula serrata Frohlich, 1789 is an aberrant endoparasite of occasional zoonotic importance in humans. We report the prevalence of encapsulated nymphal stages of L. serrata in domestic ruminants surveyed in Wayanad, located in Kerala State, South India. Large and small intestine mesentery were examined from 100 goats, cattle and buffaloes each revealing an infection prevalence of 21, 19, and 8%, respectively. The prevalence of L. serrata infection among ruminants is higher than previous reports from India and indicates a strong focus of infection in herbivorous domesticated mammals of South India. The potential importance of these findings to human health is discussed.

Visceral schistosomiasis among domestic ruminants slaughtered in Wayanad, South India.

This short communication reports the prevalence of visceral schistosomiasis by worm counts from the mesentery of domestic ruminants of the hilly district of Wayanad, located in Kerala, one of the states in South India. We found 57.3, 50, and 4.7% of cattle, buffaloes and goats, respectively, had visceral schistosomiasis upon slaughter at a municipal slaughter house in Kalpetta. Our findings show that the prevalence of Schistosoma spindale infection is very high in Wayanad in comparison to previous reports from this and neighboring countries.

Dirofilariosis in dogs and humans in Kerala.

There has been an increased occurrence of filarial worms in the subcutaneous tissues and subconjunctival space of human beings belonging to different areas of the state of Kerala. The present work was carried out to identify the worms recovered from human cases, to study the presence of microfilariae in dogs and to discuss the possible mode of infection in human beings. Twelve worm specimens from human patients received in the Department of Veterinary Parasitology, College of Veterinary and Animal Sciences, Mannuthy from 2002 to 2004 were identified as Dirofilaria repens based on morphology. Out of the 160 blood smears of dogs examined during the same period, microfilariae were detected in 11 samples (7%). With 7 per cent dogs positive for microfilariae of D. repens in Kerala, it is suggested that human beings are at an enhanced risk of acquiring dirofilaria infection.