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 ...

In early January, more than 700 Stanford University athletes took rapid Covid tests upon returning to the campus. Those who tested negative — and some who tested positive — were also given PCR tests.

In many parts of the world, rapid COVID-19 testing is part of daily life. Despite the FDA emergency use authorization and the advocacy of many infectious disease and public health experts calling for ...

Rapid tests are not as sensitive, meaning it's possible for patients who are infected with COVID to receive a negative result. WASHINGTON -- President Joe Biden plans to announce on Tuesday that his ...