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

After years of work, scientists have solved the mystery of an unusual side effect that impacted some recipients of the Oxford/AstraZeneca and Johnson & Johnson COVID-19 vaccines. Most importantly, the ...

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

A vaccine with University of Washington roots that fights a suite of coronaviruses including COVID-19 and related, deadly ...

Researchers identify genetic mutation in small group of people who developed the serious disorder after receiving the AstraZeneca or Johnson & Johnson vaccine.

Scientists say they now know what went wrong with Johnson & Johnson’s Covid vaccine - Some people who took the shots ...

The clots occurred in two to three out of every 100,000 people who received the vaccine.

A global research collaboration of scientists from McMaster University (Canada), Flinders University (Australia) and Universitätsmedizin Greifswald (Germany) uncovered why a small number of people ...