Purpose. To evaluate comorbid pathology in patients with post-Covid syndrome (PCS).

Materials and methods. Evaluation of comorbidities was carried out by the survey in patients with PCS who were treated in hospitals (106 people) using analytical and statistical methods.

Results. It was established that during March-April of 2021 in the group of 56 people with PCS the following diseases were the most common: coronary heart disease (?R = 33.088 [CI 9.444-115.930]), arterial hypertension (?R = 13.641 [CI 6.547-28.422]), diabetes (?R = 4.755 [CI 1.915-11.803]), heart failure (?R = 18.504 [CI 8.200-41.752]), adiposity (?R = 4.828 [CI 2.433-9.581]). Smoking and alcohol abuse were not significant. A combination of comorbid pathology was evaluated using Euler circles. It was established that the combination of all 5 diseases was present in 3 people, of 4 different pathologies - in 6 people, 3 - in 19 people, 2 - in 11 people, one separate pathology - in 17 people. The combination of 3 pathologies was the most common (arterial hypertension, heart failure, obesity) - in 18 people. For the period December 2021 - January 2022 (II stage), the following trends were noted in 50 patients: arterial hypertension (?R = 22.263 [CI 9.116-54.368]), diabetes ?R = 41.707 ([CI 12.074-144.074]), heart failure ?R = 39.588  [CI 13.187-118.846]) dominated.

Conclusion. In persons who were treated in an inpatient setting with COVID-19 there was a greater probability of the formation of a prolonged PCS when combined with such comorbid pathology: coronary heart disease, arterial hypertension, diabetes, heart failure, adiposity. Every eighth patient had a combination of all 4 diseases.