COVID and flu tests aren't designed to tell you how sick you are, but if you use them to monitor your infection, they can provide useful information.

It seems everyone has a “summer cold” these days. If you have hallmark COVID symptoms—headache, runny nose, sore throat, sneezing, cough—but your at–home test says you’re negative, what do you believe ...

At-home rapid COVID-19 tests can reveal more about viral load than a simple positive/negative result, according to experts. "By definition, the basic technology suggests that you somehow have to go ...

Add Yahoo as a preferred source to see more of our stories on Google. As the nation experiences what many experts believe is the second-largest wave of COVID infections since the pandemic started, ...

You have a fever. You're in respiratory distress. And you might even be hospitalized with pneumonia. Doctors worry you may have been infected with the novel coronavirus. What happens next? Ideally, ...

In the thick of flu season and with COVID still around, keeping this 3-in-1 test at the ready is a must — especially at 28% ...

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A Covid-19 antigen self-test kit shows a positive case on January 13, 2022 in Madrid. - Spain today agreed to cap the cost of Covid antigen tests at just under three euros after the government came ...

As the nation experiences what many experts believe is the second-largest wave of COVID infections since the pandemic started, many Americans will be checking to make sure they don’t have the ...