Tritrichomonas foetus in cats from Central Italy: Clinical signs and risk factors.

Tritrichomonas foetus (Trichomonadida, Tritrichomonadidae) is a parasitic protozoan which causes a diarrheic disease in domestic cats worldwide. The epizootiological and pathogenic impact of this parasite in many geographic locations is still to be unraveled; thus, the present study has investigated the occurrence of T. foetus in cats from central Italy, along with the analysis of risk factors and clinical signs. One hundred and five cats referred to the University Veterinary Teaching Hospital of the University of Teramo were tested with copromicroscopic techniques for common intestinal and extra-intestinal parasites and a specific PCR for T. foetus. A statistical analysis evaluating associations between T. foetus positivity and possible risk factors was performed. One animal scored positive for Giardia (0.95%), 2 for Toxocara cati (1.90%), 1 for Eucoleus aerophilus (syn. Capillaria aerophila) (0.95%), 9 for Aelurostrongylus abstrusus (8.57%) and 1 for Dipylididum caninum (0.95%), while T. foetus was molecularly recorded in 18/105 (17.14%) of the study cats. In two cats, T. foetus was found in association respectively with Giardia and A. abstrusus. Animals with chronic gastrointestinal signs were more significantly infected by T. foetus (40.90% vs 10.84%; p < 0.01; 95% CI = 1.90-17.04; OR = 5.69) in comparison to cats with no gastrointestinal distresses. No other statistically significant associations were found. This study confirms that T. foetus is enzootic in cats in Italy and that it should be included in the differential diagnosis of feline chronic gastrointestinal diseases.

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