A rare but serious clotting disorder linked to certain COVID-19 vaccines and natural adenovirus infections has puzzled scientists for years.

Though it has been several years since the pandemic, researchers are discovering its ongoing impacts on society. A recent report highlights the economic impact of the COVID-19 vaccine and what ...

Learn about the safety and effectiveness of COVID-19 vaccines for kids, the possible side effects, and the benefits of vaccination.

Many continue to worry about experiencing side effects from vaccines -- especially the COVID-19 vaccines -- but new data from a comprehensive meta-analysis suggests there is little to fear. The study ...

Add Yahoo as a preferred source to see more of our stories on Google. A nurse draws up doses of the Moderna COVID-19 for a vaccination clinic in St. Helena in 2021. Moderna is offering a new, low-dose ...

One panelist accused the F.D.A. of withholding data on potential harms. The advisers also are reviewing research on vaccines ...

More than a third of Americans who were vaccinated against COVID-19 say they had side effects from the shot, and nearly half suspect the vaccines killed many patients, The latest Rasmussen Reports ...

You can’t blame this one on the stork. After a brief baby bump early in the COVID-19 pandemic, birth rates in the US and ...

The poll also highlights a group at growing risk: older adults who have never received a COVID vaccine. One in five adults ...

From inoculations against polio and smallpox to protections from measles and tetanus, vaccines are critical health care tools that have saved more than 150 million lives in the past 50 years. Rarely, ...