JERUSALEM (Reuters) – Most people who received a third dose of Pfizer Inc’s COVID-19 vaccine felt similar or fewer side effects than they did after receiving the second shot, according to an...

Editor’s note: Find the latest COVID-19 news and guidance in Medscape’s Coronavirus Resource Center. A slight majority of Americans support a return to wearing masks and social distancing...

Editor’s note: Find the latest COVID-19 news and guidance in Medscape’s Coronavirus Resource Center. Anti-vaxxers and anti-maskers gathered at Indiana University to protest mandatory COVID-19...

BRUSSELS (Reuters) – The European Union has agreed to pay a premium on new orders of COVID-19 vaccines because it is requiring tougher terms to be met, European officials said, as the bloc tries...

(Reuters) – AstraZeneca’s COVID-19 vaccine carries a small extra risk of rare blood clots with low platelets after the first dose and no extra risk after the second, a study conducted by the...

WASHINGTON (Reuters) – Top infectious disease official Anthony Fauci said on Sunday that Americans who are immune compromised may end up needing COVID-19 vaccine booster shots as the United States...

NEW YORK (Reuters Health) – The AstraZeneca-Oxford COVID-19 vaccine (ChAdOx1 nCoV-19, or AZD1222) is effective in people living with HIV, at least in the short term, according to an open-label substudy...

NEW YORK (Reuters) – As part of a nationwide response to the threat posed by the more contagious Delta coronavirus variant, New York City will require COVID-19 vaccinations or weekly tests for workers...

(Reuters) – Europe’s drug regulator said on Tuesday it had started a real-time review of the COVID-19 vaccine developed by French drugmaker Sanofi and Britain’s GlaxoSmithKline, the fifth...

(Reuters) – Johnson & Johnson said late Thursday that its single-shot COVID-19 vaccine showed promise against the highly contagious Delta variant in a laboratory study. An analysis of blood from...