“Covid is caused by a virus of the Coronaviridae family and is closely related to the virus responsible for the severe acute respiratory Syndrome (SARS).  Since December 2019, the virus has continued to spread way beyond the location of the first recorded cases (Wuhan, China).  It is therefore critical to correctly identify risk factors that lead to the exacerbation of symptoms in highly susceptible groups. Groups that are at high risk include those aged 55 or older especially those with underlying conditions such as cardiovascular diseases. Certain ethnicities such as African-Americans have been found to be at a higher risk and males seem to be higher both in numbers as well as severity of cases.”

NIH National Library of Medicine (pubmed.ncbi.nlm.nih.gov)