Prevalence of asymptomatic dermatophytes carrier cats in high population density households in Lavras–MG city

Dermatophytosis is a significant zoonosis in the world. This study aimed to investigate the prevalence of asymptomatic dermatophytes carrier cats in high population density households in Lavras (MG) city and to analyze the epidemiological factors associated with this condition. A total of 160 cats were evaluated through coat samples collected by brushing. The coat samples were inoculated in Dermatophyte Test Medium culture. After colony growth, they underwent microscopic analysis to identify dermatophytes. Statistical analysis was performed using the Chi-square test or Fischer's Exact test to assess the association between variables, determining relative risk. Twenty-seven cats (16.9%) were asymptomatic carriers, with the species Nannizzia gypsea (66.7%) were the most prevalent. There was a significant association between age and the occurrence of dermatophyte carrier status, with cats over six years old were 1.8 times more likely to occur. Mixed-breed, females, long hair, mature adults and outdoor cats were more prevalent, although there was no significant association with dermatophyte carrier status. Only one owner and their cat had a previous history of dermatophytosis. The prevalence of asymptomatic dermatophytes carrier cats in high population density household in Lavras-MG city was low, with no evidence of harm to animal and human health.