Polymerase chain reaction (PCR) and rapid (antigen) tests for COVID-19 both involve taking a swab. Results for a PCR test take longer, as it needs to go to a laboratory. It is more costly but tends 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 ...

With end-of-year holidays quickly approaching, how do we stay safe in gatherings where some people may not be vaccinated? Testing before get-togethers can help, experts say. “Ideally, we would ...

Pneumonia is an inflammatory condition affecting the lungs, typically resulting from an infection with viruses or bacteria. Community-acquired pneumonia refers to pneumonia acquired outside of the ...

As fall temperatures set in, cold and flu season gets into full swing and holiday travel picks up, people will undoubtedly have questions about COVID-19 testing. Is this the year people can finally ...