The epidemic process of a new coronavirus infection among medical workers in the context of V.D. Belyakov's theory of self-regulation of parasitic systems

Rationale: The epidemic process of COVID-19 in accordance with the theory of self-regulation of parasitic systems undergoes changes as SARS-CoV-2 evolves, both in the general population and in healthcare workers. The study of the clinical and epidemiological features of COVID-19 among employees of medical organizations at various stages of the pandemic is an important area of ​​scientific research at this stage, which allows for prompt adjustment of preventive and anti-epidemic measures. The purpose of the study is to consider the epidemic process of COVID-19 in medical organizations in the context of the theory of self-regulation of parasitic systems and to determine the clinical and epidemiological features of COVID-19 among employees of medical organizations, as well as the effectiveness of individual anti-epidemic measures at different stages of the pandemic. Methods: Report forms "General information on patients with positive COVID-19, General information on patients with community-acquired pneumonia with positive COVID-19 (497 units of information), 2176 epidemiological investigation cards of COVID-19 cases. The work used epidemiological and statistical methods of research. Results: When studying the incidence of NCVI among workers of the Moscow Region in the reservation phase, compared with the phase of the epidemic spread of SARS-CoV-2, lower levels of the incidence of COVID-19 and the proportion of severe clinical forms of this infection were established. At the same time, a high frequency of repeated cases of COVID-19, as well as cases of the disease among those vaccinated against this infection, was registered during the epidemic spread phase. Among those influencing the development of the epidemic process, violations were established in the organization of anti-epidemic measures, as well as the provision of working space for employees of the Ministry of Defense. The change in the heterogeneous population of workers in the MO due to the growth of immunity tension changed the clinical and epidemiological characteristics of the epidemic process of COVID-19. The effectiveness of specific prevention was assessed. Conclusion: The study confirms the correctness of the theory of self-regulation of parasitic systems of V.D. Belyakov, regarding the epidemic process of COVID-19 among employees of medical organizations, incl. the presence of successive phases of the epidemic process, the impact on it of the heterogeneity of the pathogen and host populations, as well as individual social factors, vaccination against COVID-19 of the population .