T cells play a key role in the human immune system. They are capable of distinguishing diseased or foreign tissue from the body’s own, healthy tissue with great accuracy; they are capable of triggering...

Americans are increasingly concerned that regulators and manufacturers will rush a vaccine to market without an adequate review. That prompted nine vaccine front-runners, including Pfizer and Merck, to...

It may have been the dollar bills he exchanged with a cashier at a mini-mart or the merchandise he picked up while shopping at a large retail store. But something Wayne Wells did exposed him to the coronavirus,...

We’ve all made online purchases where the expectation is very different to the reality. When one mum bought a pair of veneers online for £3.98, though, she didn’t have high hopes. Sara Hamilton, 30,...