Your last meal is usually to blame if there’s a bad taste lingering in your mouth — but it could also be a sign you’re sick.

The unpleasant taste that remains in your mouth for a long time can usually be attributed to the last food you ate. However, ...

The F.D.A. and the C.D.C. have both weighed in, but confusion remains. Here’s what to know. By Maggie Astor The threat of Covid infections has not gone away, but the vaccines that help protect against ...