Experts investigated the interaction of coronavirus with red blood cells in the blood of infected patients.
Disease susceptibility often depended on how well the virus binds to the cells.
According to RIA Novosti, scientists have found that the coronavirus binds more easily to epithelial cells on the walls of the pulmonary alveoli of people with blood group II.
Researchers found the same pattern when studying the SARS-CoV virus that caused the outbreak of SARS in 2002-2003.
Earlier, the doctor spoke about the possible effect of vitamin deficiency on COVID-19.