Two reasons for the renewed COVID-19 vaccine campaign include updated booster shots and the approach of fall and winter.

The inventors of Corbevax said it was cheap, easy to make, effective and safe. They hoped it could bring vaccine equity to countries that can't access costlier shots. Has it lived up to its promise?

A coalition of religious groups, conservative think tanks, and Republican attorneys general have chipped away at local and state authority, altering how the nation can respond during health crises.

The Food and Drug Administration will have to decide the exact recipe, but a combination shot is expected that adds protection against a version of the omicron variant to the original vaccine.

The Food and Drug Administration will have to decide the exact recipe, but a combination shot is expected that adds protection against a version of the omicron variant to the original vaccine.

COVID vaccines for kids under age 5 were approved last week in a major development to tackle the pandemic. Health experts are telling parents to contact their pediatricians for a shot. But for many, that’s not an option. 

CDC advisers are recommending the use of two separate COVID-19 vaccines for the youngest children made by Moderna and Pfizer-BioNTech, paving the way for vaccine rollout as early as next week.

Advisers to the Food and Drug Administration overwhelmingly voted to recommend that it authorize Novavax's two-dose vaccine against COVID-19.

The Food and Drug Administration expanded authorization of Pfizer-BioNTech's COVID vaccine to enable kids ages 5 to 11 who were vaccinated at least five months ago to get a third shot.

During the pandemic scientists launched a vaccine in record-breaking time. Their successful use of mRNA technology could lead to progress in the decades-long effort for an HIV inoculation.

As the world enters the pandemic's 3rd year, some ask whether the 70% vaccination goal set by WHO and the Biden administration could in fact be detrimental. Also: See our map of global progress.

Some countries are moving ahead with plans to offer a fourth dose of COVID-19 vaccine. But studies are raising questions about the potential advantages of this extra booster.

At 16, Nicolas Montero is old enough to get vaccinated on his own in some parts of the country. But he had to try to get the jabs without his parents knowing, since they're opposed to the vaccine.

The Serbian tennis star says he understands he may miss the French Open and Wimbledon as a result. He adds that his decision is personal and he shouldn't be lumped in with anti-vaccination activists.

Brigham and Women's Hospital in Boston said the COVID-19 vaccine is one of several immunizations required by most U.S. transplant programs.