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

Find out about the COVID-19 vaccines, the benefits of COVID-19 vaccination and the possible side effects.

HealthDay News — More than four in 10 people older than 50 years (42 percent) have not gotten either a flu or COVID-19 ...

Polling found that nearly 30% of older adults chose not to receive flu or COVID-19 vaccines due to a perceived lack of need.

The messenger RNA COVID-19 vaccine is not tied to neurodevelopmental disorders in youth whose mothers who were vaccinated immediately before or during pregnancy, data show.The study, presented at The ...

COVID-19 vaccination during pregnancy shows no link to autism or developmental delays in young children, according to new ...

A new case report was published in Volume 17 of Oncotarget on February 6, 2026, titled "Exploring the potential link between mRNA COVID-19 vaccinations and cancer: A case report with a review of ...

The mRNA COVID-19 vaccine is not associated with autism or other neurodevelopmental problems in children whose mothers received the vaccine immediately before or during pregnancy, according to new ...

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

The Food and Drug Administration on Wednesday defended its rejection of Moderna’s mRNA-based flu vaccine application, saying the company’s clinical trial design put patients at risk ...