Abstract
Approximately 14% of patients with coronavirus disease 2019 (COVID-19) have severe disease and 6% develop critical symptoms. The lethality of COVID-19 is around 4%. Severe symptoms manifest after approximately 7 to 8 days from the beginning of the disease, and progression to the critical form occurs on average after the 11th day of symptoms. The pathogenesis of COVID-19 is related to the …