Helminthozoonosis and Toxoplasmosis in the Ryazan Region

Laboratory tests were carried out for toxocariasis, strongyloidiasis, and ancylostomiasis of carnivorous animals and a statistical epidemiological record was made for the prevalence of toxoplasmosis. Fecal samples from dogs were found to have eggs of Strongyloides stercoralisc and Ancylostoma caninum using the flotation method in eight cases out of ten (prevalence = 80%, infection intensitymean = 26 specimens) in the Ryazan Central Park, and in five cases of ten (prevalence = 50%, infection intensitymean = 12 specimens) in the Novopavlovskaya Wood. Using the BermanOrlov method, nematode larval stages were identified in all positive samples: the mean invasion intensity was 38 specimens in one sample in the Central Park, and 26 specimens in the Novopavlovskaya Wood. The method of cultivation in a thermostat found Strongyloides stercoralis and Ancylostoma caninum larvae in quantities of 39 to 45 specimens. In one of the shelters in Ryazan, the diagnosis of toxocariasis was confirmed in 7%, ancylostomiasis in 9%, and strongyloidiasis in 4,5% when examining puppies. A retrospective analysis for toxocariasis in dogs (puppies aged 1.5–3.5 months) showed the following results: 13.2% in 2012, 17.8% in 2015, 15.5% in 2018, 18.1% in 2021, and 14.6% in 2023. According to the Center for Hygiene and Epidemiology of the Ryazan Region, seropositive results for toxoplasmosis were detected in 58 cases with a subclinical, latent course of the disease for 1998 to 2021.