Monitoring of Dog Dirofilariasis the North-Western Caucasus
In the course of a study conducted in 2015-2019, it was found that there is a permanent center of dirofilariasis in the North-Western Caucasus, which is actively supported by domestic dogs and cats, as well as wild predatory mammals. Dogs in the region have two types of dirofilaria cardionematoda Dirofilaria immitis and subcutaneous Dirofilaria repens. The highest extensity of invasion (EI) Dirofilaria immitis autopsy from 71.4 to 87.5% have dogs in overflow land, foothill and mountain zones of the region and the smallest from 33.3 to 40.0% in the lowlands. According to the results of a parasitological study of blood, the highest and lowest EI of Dirofilaria immitis was also found in these zones and amounted to 28.7 to 30.6% and 17.7 to 18.8%, respectively. The average EI of dirofilaria Dirofilaria immitis depends on the area of the study region, on the breed and the method of detention and use of dogs. According to the results of the autopsy, the average EI for the study period was 58.8%, according to the results of the Knott blood test - 26.0%, and the test system - 28.8%. The largest number of dogs infected with dirofilariasis were between the ages of 4 and 9 years. The most infected are short-haired breeds, yard dogs, guard dogs, hunting dogs, and service dogs. Sexual dependence is not established.