Author(s): Ejdys Elbieta
Introduction: The current results of studies indicate a large influence of social sphere on presence of fungi in ontocenoses of healthy children. It is possible that differences in prevalence of fungi between girls and boys residing in rural and urban areas result mainly from physiological and not environmental factors. Objective of the study: The study aimed at determination of differences in prevalence, diversity of species and phenology of yeast-like fungi in girls and boys depending on the age and the specific features of the examined ontocenoses. Material and methods: Material for analysis consisted of fungi isolated from the oral cavity, throat and nasal cavity vestibule of 238 girls and 206 boys aged 6 to 18 years considered healthy. The samples were collected in the spring and autumn. The children were divided into three age groups: 6-9, 10-15 and 16-18 years. Results: In the examined girls 121 isolates of yeast-like fungi were recorded while in the group of boys - 110. The analyzed material contained 15 species of fungi belonging to 5 genera: Candida, Rhodotorula, Saccharomyces, Saccharomycopsis and Trichosporon. Yeast-like fungi dominated. The most frequently isolated species were: Candida albicans, Candida dubliniensis, Candida guilliermondii, Candida tropicalis and Trichosporon beigelii. The numbers of fungal species found in girls and boys were similar at 14 and 13 respectively. In case of girls yeast-like fungi were isolated in 78 (32.77%) and in boys in 63 (30.58%) cases. Conclusions: Similar prevalence of fungi was determined in girls and boys. The spectrum of species and frequency of individual fungal species in the studied groups differed. Compared with the group of boys, in case of girls, it was observed a smaller frequency of C. albicans than C. tropicalis and C. dubliniensis. The analysis of relation between presence of fungi in the examined children and the year season, specifics of ontocenoses and age showed that most probably each gender is predisposed for infection by a different set of factors and that in case of girls it changes with age. Physiological factors; ontocenosis type and age of the child have the major influence on the appearance of yeasts-like fungi in generally healthy children.