Bronchial obstruction in patients during COVID-19 and as a manifestation of post-COVID syndrome

СOVID-19, the novel coronavirus infection, is a severe acute respiratory infection caused by a virus of the Coronaviridae family, with more than 45 species today. The first manifestations of respiratory disorders were identified back in 1965. As a rule, the main route of infection is airborne. Since the declaration of the pandemic of the novel coronavirus disease in 2019, the world continues to face not only its devastating impact on morbidity and mortality, but also global socioeconomic consequences, particularly respiratory complications. The most significant one is the development of bronchial obstruction in the post-COVID period. This article talks about COVID-19 and the post-Covid period in patients with chronic obstructive pulmonary disease and bronchial asthma, touches on the etiopathogenetic aspects of the development of bronchial obstruction, and discusses the diagnosis, treatment, and prevention of these conditions.