Dr. Murai Éva szerk.: Parasitologia Hungarica 21. (Budapest, 1988)

Toxocara canis + Toxascaris leonina Toxocara canis + Capillaria spp. Toxocara canis + Trichuris vulpis Dipylidium caninum + Trichuris vulpis One sample contained eggs of three helminth species. Table 5 shows the seasonal distribution of results obtained for the five parks in which more than 10 faecal samples were collected, and summarizes the data obtained for the 11 parks sampled. b\ Faecal examination in cats Out of the 150 cats examined, 122 were treated at different clinics of the University of Veterinary Science (their age and sex were known), and 28 were inhabitants^of the Animals'Home in Fót, operated by the then still existing National Society for Animal Protection. In the group of cats treated at the university clinics the proportion of positive cats was the highest (33.9%) among those treated at the Inpatient Clinic for Internal Medicine. Among cats housed in the Animals' Home the proportion of positive animals was still higher (50%). Among cats treated at the clinics 33. 3% of the 99 females and 34. 8% of the 23 males were infected by different intestinal helminths. T. mystax infection was the most prevalent (Table 6). No significant difference was observed between the two sexes in the prevalence of roundworm infection. Data on the total helminth infection and roundworm infection in the various age groups of cats treated at the university clinics are presented in Table 7. Table 7 Total prevalence of helminthoses and prevalence of Toxocara mystax in different age groups of cats 1 year 1 - 3 years 3 years n = 67 n= 39 n= 16 no. % no. % no. % Total no. infected 22 32. 8 19 32. 8 2 12. 5 Toxocara mystax 21 31. 3 12 30. 8 2 12. 5 EVALUATION AND CONCLUSIONS a) Results obtained in dogs Comparing the results of faecal examinations to data obtained abroad, and mainly in European countries (Table 8), it can be established that in Hungary T. vulpis is the most prevalent, and the prevalence of infection in all groups exceeds those reported abroad (Tables 1 and 2). In surveys conducted in Canada and in certain European countries including Czechoslovakia, Toxocara infection was found to be the most prevalent. Surveys conducted in the United States of America indicated high prevalence of hookworms. The prevalence of intestinal helminths in dogs depends on the dogs' age and, according to certain authors (HOSKINS, MALONE and SMITH, 1982) also on their sex. At the Veterinary Clinic of Iowa State University (USA), faecal samples of a total of 33,9 54 dogs were examined during an 8-year period and the results were analysed by computer. Worms belonging to the family Ancylostomatidae most frequently occurred between the age of two weeks and two months, and subsequently the prevalence of infection slowly but continuously decreased. The prevalence of roundworm infection was found to decrease rapidly with age. T. vulpis most frequently occurred between 6 and 12 months of age (LIGHTNER, CHRISTENSEN and BERAN, 1978).