LAUSR

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