After a recent COVID-19 exposure, Dr. Christina Astley tested positive on an at-home test—but just barely. The line signifying a positive result was so faint that Astley, an endocrinologist at Boston ...

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).

As the COVID-19 pandemic enters its fourth year, a negative result on a little plastic at-home test feels a bit less comforting than it once did. Still, you dutifully swab your nostrils before dinner ...

COVID-19 rapid tests are easy to take—and then toss. So most people never report their results, which leaves health officials with an incomplete picture of how much virus is circulating and where. The ...

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 ...

With Covid-19 cases up across the country, many people are once again relying on home tests to guide decisions about going to work and sending their kids to school and other activities. A lot of those ...

Welcome to what some experts say is the country’s second largest COVID wave since the start of the pandemic. In the past few weeks, there’s been a striking increase in new cases, hospitalizations, and ...