By Dr. Ramya Dwivedi, Ph.D. Jul 28 2021 Reviewed by Benedette Cuffari, M.Sc. The prevalence of hypertension, diabetes, cardiovascular diseases, and respiratory diseases are high-risk factors for severe coronavirus disease 2019 (COVID-19). COVID-19, which is caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is a respiratory disease that has infected more than 195...