Canine Filariasis in Southwestern Ohio

Abstract

Prevalence of canine filariasis was determined in 2101 dogs surveyed between February 1976 and February 1977 in southwestern Ohio. Prevalence of D. immitis was 1.9% while no D. reconditum were found. Dogs from veterinary clinics had a prevalence of 1.2% (n=1679), while a 4.5% (n = 422) prevalence was reported from animal shelter dogs. A significantly higher prevalence was reported in male dogs, dogs with short hair, and those that were kept out-of-doors most of the time. The incidence of infection in those dogs who had been reported out-of-Ohio within the year prior to checking was 3.5% as compared to 3.2% in dogs that had not been out of Ohio. Thus, D. immitis infection is endemic in the area.