Rare but dangerous blood clotting associated with that vaccine as well as AstraZeneca’s had a genetic cause, according to a new paper.

When people get the shots, the body’s immune system can accidentally confuse a normal protein from adenovirus - which is used ...

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

Scientists say they have identified a mutated autoantibody gene as the mechanism behind rare but serious abnormal blood ...

LIBERTYVILLE, Ill. -- Advocate Aurora Health, a health care system in Wisconsin and Illinois, said it has resumed COVID-19 vaccinations after temporarily pausing them to investigate "experienced ...

Rare but deadly blood clots tied to J&J and AstraZeneca's vaccines were caused by an autoimmune reaction that some people are predisposed to, researchers found.

Former Canadian Prime Minister Justin Trudeau's reaction to a journalist's question about COVID-19 vaccine deaths has gone viral. When asked if a cameraman's mother dying after vaccine complications ...

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