The best time to take an at-home COVID-19 test may be on the fourth day of having symptoms, according to a study published in the journal Clinical Infectious Diseases. Researchers looked at nearly 350 ...

The timing of symptom onset depends on lots of factors, including the amount of virus to which someone was exposed, Hotez says. Their level of pre-existing immunity may also affect the likelihood or ...

WASHINGTON -- President Joe Biden plans to announce on Tuesday that his administration will distribute 500 million free at-home rapid tests to Americans beginning in January to combat the surging ...

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 ...

It's not easy to tell these health conditions apart based on their symptoms alone. Find out about the differences between these illnesses.