"We know that repeated infection with COVID-19 is common for children, and this study has added to the evidence that these ...

Nearly one in four people may not get COVID-19 vaccines until at least 2022 because rich countries with less than 15% of the global population have reserved 51% of the doses of the most promising ...

Headache, fatigue, and muscle pain are common complaints after vaccination. But are these symptoms truly caused by the ...

The sales of Pfizer’s Comirnaty shots sank 25% after the U.S. government narrowed recommendations of who needs the jab ...