Hungarian-born biochemist Katalin Karikó and American immunologist Drew Weissman found that a chemical change to genetic code called mRNA eliminated a problematic side effect when used in vaccines.
Updated versions of the mRNA vaccines roll out this week. Experts say they offer good protection against current COVID variants. Who should get them, and when's the best time to roll up your sleeve?
Vaccines for a fall immunization drive against COVID-19 just got the green light from the Food and Drug Administration. The agency says the vaccines can protect people, as hospitalizations tick up.
The Food and Drug Administration appears poised to make available the COVID-19 vaccines that target omicron as a second booster for people with weak immune systems and those ages 65 and older.
As case counts surge in China, rumors circulate about the effectiveness and safety of the made-in-China vaccines in use there. Here's what we know about CoronaVac and Sinopharm.
Public health officials want more Americans to get the latest COVID vaccine booster. Only 35% of people over 65 have gotten the shot, though 75% of COVID deaths are among people in this age group.
Scientists predict China will see the largest COVID surge of the pandemic this winter, with hundreds of millions of people infected. But some experts say that it could have been even worse.
There is a lot of information about coronavirus vaccines out there, and some of it seems vague or contradictory. We talked to experts to help answer some of the most common and confusing questions.
The new shots from Moderna and Pfizer-BioNTech target both the original strain of the coronavirus and the omicron BA.4/BA.5 subvariants that most people are catching now.
Adults who haven't gotten any COVID-19 shots should consider the new option, the agency said Tuesday. The spike protein vaccine is more typical than the mRNA types being broadly used against COVID.
