PCR tests are very accurate and can find the virus even in people without symptoms. Rapid tests can be done at home and show results in minutes. It's important to follow instructions closely when ...

In a study involving nearly 1,000 patients seen at a Baltimore field hospital during a five-month period in 2022, researchers at Johns Hopkins Medicine, the University of Maryland School of Medicine, ...

COVID-19’s danger lay in its invisibility. The SARS-CoV-2 virus is highly contagious and can be passed on by people with light or no symptoms, making it extremely difficult to track and contain. But ...

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 ...

In a study involving nearly 1,000 patients seen at the Baltimore Convention Center Field Hospital (BCCFH) during a five-month period in 2022 - researchers at Johns Hopkins Medicine, the University of ...

At the start of the SARS-CoV-2 pandemic people who felt unwell had to join long queues for lab-based PCR tests and then wait for two days to learn if they were infected with the COVID-19 virus or not.

In a large-scale study funded by Kings College London, researchers successfully implemented an automated PCR-based testing program for SARS-CoV-2 using saliva samples from asymptomatic students and ...

You wake up with a scratchy throat, runny nose, and persistent cough, but your at-home COVID-19 test reads negative. How is this possible? The short answer is yes—you can still be infected. Many other ...