How do vaccines work? Here's what medical experts want you to know about safety and efficacy.

COVID-19 vaccines lower the risk of getting sick, seriously ill or dying from the disease. But how do the different types of COVID-19 vaccines work? Each COVID-19 vaccine causes the immune system to ...

Vaccines have traditionally worked by teaching the immune system to recognize a specific virus or bacterium—in effect, ...

An experimental treatment protects mice from COVID-19, flu, bacteria, and more.

West Coast states are teaming up to issue their own vaccine guidelines in the face of rapid changes at the Centers for Disease Control and Prevention and the Food and Drug Administration. The federal ...

LEXINGTON, Ky. (WKYT) - For today’s Good Question, Michelle asks: How long does it take for a vaccination to become effective once given? That can vary based on the type of vaccines and whether or not ...

HHS Secretary Robert F. Kennedy Jr.'s vaccine advisors have set their sights on aluminum adjuvants in vaccines as part of their review of the U.S. pediatric vaccine schedule. While the concept of ...

A vaccine combined with Keytruda is associated with a 49% reduction in the risk of recurrence or death. Among patients with advanced melanoma, long-term data have shown that a personalized mRNA cancer ...

The adjuvanted respiratory syncytial virus (RSV) vaccine RSVPreF3 was immunogenic in lung transplant (LT) and allogeneic hematopoietic cell transplant (alloHCT) recipients. No vaccine-associated ...

A 4-year-old boy picks out a bandage before getting vaccinated in San Jose, California, in 2022. (Jane Tyska/Digital First Media/The Mercury News via Getty Images) How we did this Pew Research Center ...