You may get a PCR test, which can show a positive result for up to three months after recovery. If you take a rapid antigen ...

It’s best to test for RSV soon after your symptoms start. That’s because you’ll likely have the most virus in your system then. As you get better, the amount of virus will go down. (Photo Credit: ...

Rapid antigen tests for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are effective tools for the diagnosis of acute infection, particularly when used serially. 1 The percentage of ...

If you’re wondering if your fever, chills and body aches are a classic case of the flu or the dreaded COVID-19, your best option is to get tested. New variants are constantly circulating, as new ...

It was possible -- albeit rare -- for people not infected with SARS-CoV-2 to have persistent false positive rapid antigen COVID-19 tests, longitudinal data showed. Among a large cohort of over 11,000 ...

COVID cases are starting to creep up again in the U.S., and it’s understandable to have new questions about the virus and the newest CDC guidance on isolation after a positive test. After all, it’s ...

Amid a rise in COVID cases and the start of fall allergies, flu and RSV season, experts say testing is an important tool heading into the cooler month. With more people testing positive for COVID once ...

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 ...