Coronaviruses (CoVs) are a group of RNA viruses that infect mammals and birds. In humans, CoVs mainly cause mild diseases, including the common cold. However, in the 21 st century three pandemic strains of novel CoVs, highly pathogenic to humans, emerged. These three novel CoVs are zoonosis. In 2002-2003, we dealt with the Severe Acute Respiratory Syndrome coronavirus (currently, SARS-CoV) and in 2012, the Middle East Respiratory Syndrome coronavirus (MERS-CoV). The emergence of SARS-CoV-2 in December 2019 in Wuhan (Hubei province, China) marked the next introduction of a novel, highly pathogenic CoV into the human population [112]. In most cases, SARS-CoV-2 causes mild or moderate respiratory illness and the recovery does not require any special treatment. However, some infected individuals, with associated medical conditions, developed a severe disease called Coronavirus Disease 2019 (COVID-19) with such clinical manifestations as dyspnea, hypoxia, and lung lesions, being an indication for treatment in