Timely vaccination reduces the risks of contracting an illness by working with your body's natural defenses to build protection and immunity. Your immune system responds when you receive a vaccine.

Health How does the new at-home flu vaccine work? The vaccine is a nasal spray. The FDA approved the vaccine for anyone between the ages of 2 and 39.

New research shows the shingles vaccine can lower your risk of stroke and heart attack—in addition to preventing the total ...

How does the measles vaccine work? The MMR vaccine is a live attenuated vaccine, which means it contains a weakened form of the measles virus (as well as mumps and rubella viruses), explains ...

The FDA approval of this year's COVID-19 shots came with caveats, not universal recommendations. Here's what you need to know ...

NPR's Juana Summers talks with infectious disease expert Dr. Peter Chin-Hong about the new rules regarding access to COVID-19 vaccines.

The number of measles cases in the US has risen to a record level. Learn how to protect yourself.

As federal health agencies change their approach to vaccine policy leaving access for COVID shots uncertain, some states are ...

"Every last one of them is wrong and drips with disdain and slavery," Dr. Joseph Ladapo said. "Who am I to tell you what your child should put in [their] body?" ...

The state would be the first to scrap requirements that children be vaccinated to attend school, among other rules.

"The vaccine is a live virus that is introducing a very weak form of measles so your body can practice fighting it off," says Quinones.