At-home COVID-19 tests have become commonplace for many households, but knowing when exactly to take a rapid test — or when to throw old ones out — isn't always straightforward. Here's what health ...

Add Yahoo as a preferred source to see more of our stories on Google. Covid-19 at home Rapid Test Kit The FDA has extended the shelf life for some COVID-19 tests. Now that allergy season is here, many ...

As we get into another winter holiday season, COVID is still part of our lives. And although it's hard to predict exactly what this year's cold, flu and coronavirus season will look like, experts want ...

Experts aren't quite sure what's in store for us this cold, flu and COVID season. But with a new flu variant beginning to spread in the U.S. and low COVID vaccination rates, this may be a more severe ...

It seems easy enough to take a COVID-19 test at home. But what if your results aren't so simple to interpret? If you get just a faint line, does that mean you're actually positive for COVID? I know ...

Have you ever noticed how a spilled cup of coffee leaves behind a telltale brown ring? While those stains might be annoying, the science behind them, known as the coffee ring effect, has sparked ...