A new diagnostic tool developed by researchers can test for SARS-CoV-2 and Zika virus with the same or better accuracy as high-precision PCR tests in a matter of hours. Over the past four years, many ...

Here’s what we know so far about the omicron variant. PREVIOUS REPORTING: Earlier this month, the White House announced that it would invest $1 billion to make more at-home COVID-19 tests available to ...

To quickly confirm an asymptomatic case of COVID-19, a second rapid test within an hour of a positive result can boost the accuracy of the result from 38 percent to 92 percent, according to a new ...

Visby Medical’s new at-home PCR test for women delivers results in 30 minutes—and can arrive the same day via GoPuff or ...

A COVID-19 sensor developed at Johns Hopkins University could revolutionize virus testing by adding accuracy and speed to a process that frustrated many during the pandemic. In a new study published ...

If you're using Virginia's Covidwise app to be warned when you encounter someone who's been exposed to COVID, you are not getting the whole story. Over the last few months, statewide COVID-19 ...

Antigen tests can identify the presence of antigens within the body, which are substances that cause immune responses, such as the release of antibodies. The immune system, and antibodies specifically ...

Over the past four years, many of us have become accustomed to a swab up the nose to test for COVID-19, using at-home rapid antigen tests or the more accurate clinic-provided PCR tests with a longer ...

Over the past four years, many of us have become accustomed to a swab up the nose to test for COVID-19, using at-home rapid antigen tests or the more accurate clinic-provided PCR tests with a longer ...