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: ...

Over-the-counter multiplex tests for more than one illness may soon come to a pharmacy near you. Paco Burgada/iStock via Getty Images A scratchy, sore throat, a relentless fever, a pounding head and a ...

If you've ever taken an at-home diagnostic test for COVID-19, you can partially credit the technology to the Johns Hopkins University Center for Innovative Diagnostics for Infectious Diseases (CIDID).

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 ...

People can test themselves about as accurately at home with rapid antigen coronavirus tests as health care professionals using the same tests, according to a Johns Hopkins Medicine-led study published ...

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 ...

The U.S. is currently in the midst of a Covid wave, fueled by the JN.1 variant that’s driving up hospitalizations and deaths across the country. For most people, however, the new variant doesn’t seem ...