The newly updated CDC guidelines don't require testing at the end of isolation because PCR tests can stay positive for up to 12 weeks, CDC Director Dr. Rochelle Walensky told "Good Morning America" on ...

Researchers from Osaka University compare the sensitivity of RATs and PCR tests for the Omicron variant of COVID-19 Osaka, Japan - Testing plays a crucial role in humanity’s strategy to mitigate the ...

A study led by Osaka University recently found that the sensitivity of rapid antigen tests (RATs) for the Omicron variant of COVID-19 when compared with polymerase chain reaction (PCR) tests was 0.63 ...

FILE PHOTO: Logo of Swiss drugmaker Roche is seen in Basel ZURICH (Reuters) - Roche has launched a new PCR test to detect a fast-spreading sub-variant of the Omicron variant of Coronavirus, the Swiss ...

NEW YORK -- This holiday season held promise for Americans, many of whom spent Christmas 2020 in quarantine or away from loved ones due to a nasty winter COVID-19 surge. Yet in the last week or so, ...

Amid a rise in COVID cases and the start of fall allergies, flu and RSV season, experts say testing is an important tool heading into the cooler month. With more people testing positive for COVID once ...

With the COVID-19 omicron variant expected to be detected in the U.S. soon, public health labs are ramping up testing efforts and prioritizing sequencing of positive samples with an “s-gene dropout,” ...

UNIONDALE, Nassau County (WABC) -- Hundreds lined up in their cars as Nassau County kicked off the distribution of 20,000 free at-home test kits on Thursday. County Executive Laura Curran was there to ...

The immune system’s first encounter with a virus or vaccine establishes a “starting template” that shapes its response to new ...