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Peek in medicine cabinets across the U.S. and you’ll find stacks of leftover COVID-19 tests. When symptoms arise, so do questions: When should I test? How accurate is it really? And what should I do ...

As folks travel to see loved ones for the holiday season, there’s one thing no one wants to pack — an infectious disease. But whether you have the sniffles or just want to take precautions around ...

Update: This program has ended and free tests are not current available from the government website. As cases of a new COVID-19 variant tick upward across the U.S., the federal government is again ...

Testing yourself for coronavirus infection can be more convenient than getting a clinic or lab test, but from a public health standpoint, experts say there's at least one key downside. Only 7% of ...

Allergies can confuse people into thinking they aren't sick.