The results are presented of the study of rotavirus gastroenteritis course in 45 patients (23 children and 22 adults) with different phoretypes. Phoretypical heterogeneity of rotavirus population was discovered among which the "long" phoretype prevailed. Rotavirus infection ran with diverse clinical symptoms: mild, moderate and severe. A lethal outcome occurred in an old male patient. No correlation was found between the phoretype and severity of the disease.