"asymptomatic-covid-19"

The team led by Newcastle University in the UK demonstrated that the gene HLA-DRB1*04:01 is found three times as often in people who are asymptomatic, suggesting that people carrying this gene have some level of protection from severe Covid.

The Pfizer-BioNTech and Moderna messenger RNA (mRNA) vaccines for COVID-19 are authorised for emergency use in many countries.