Clinical and epidemiological assessment of the epidemic process of covid-19 in hostels depending on the type of their planning arrangement

PURPOSE: During the COVID-19 pandemic, people living in dormitories became one of the most vulnerable groups of the population involved in the process of focal morbidity. AIM: To analyze the clinical and epidemiological features of the manifestation of the epidemic process of COVID-19 in hostels, depending on the type of their planning arrangement. METHODS & MATERIALS: A prospective analytical study of 350 foci of COVID-19 formed in hostels in Moscow in the period from 04.12.2020 to 06.23.2020 with 3,228 cases in total. RESULTS: The epidemic process in the corridor-type dormitories (СTВ) had an earlier development, the first foci of COVID-19 began to form as early as 04/12/2020, which was 7 days ahead of the formation of foci in block-type dormitories (BCD). The average growth rate in the corridor-type dormitories was 8.4%, which was 5.3 times higher than the corresponding indicator in block-type dormitories. The prevalence rate was 1.5 times higher in the corridor-type dormitories. From 04/12/2020 to 06/23/2020, the number of COVID-19 infected in the block-type dormitories was significantly less than in the corridor-type dormitories: there were 4 cases of infection per 100 guests of the block-type dormitories, while in the corridor-type dormitories there were 10 cases of COVID-19 per 100 residents. The prevalence rate of severe COVID-19 in block-type dormitories was 1.1%, while in corridor-type dormitories the studied coefficient was 11 times higher and averaged 11.6%. CONCLUSION: The type of planning arrangement of collective housing organizations is a fundamental factor influencing on the course of epidemic process of COVID-19 in dormitories. The complex of necessary anti-epidemic measures aimed at localizing