Routine childhood vaccinations will have prevented hundreds of millions of illnesses, tens of millions of hospitalizations and more than 1 million deaths among people born between 1994 and 2023, according to the US Centers for Disease Control and Prevention.

COVID-19 vaccines were found to cut risk of heart failure by up to 55% and blood clots by up to 78% following COVID infection, according to a new study.

The condition - which is mild for most but can cause a recurrent heart palpitation in rare cases - was most common after the second dose, researchers at Kaiser Permanente found.