Here's a guide to the vaccines being used in different countries.
A coronavirus variant identified in South Africa may not be as vulnerable to COVID-19 vaccines as other strains, some scientists say.
A new model projects how case rates, hospitalizations and deaths will fall as COVID-19 vaccinations begin.
The recommendations for self-isolation — for people who test positive for COVID-19 — have not changed.
More than 100 SARS-CoV-2 infected mink may have escaped from Danish farms, raising the risk that these escapees could spread the novel coronavirus to wild animals.