Coronavirus Frequently Asked Questions

He said the tests will allow students to "get those results back quickly and make sure when they go back in person they're doing so safely, knowing they haven't contracted the disease over the holidays."

Speaking at a news conference in Alameda County, Newsom said "protecting our front-line heroes and employees" was a critical step in beating back COVID-19.

The test was done after a White House staff member — who had flown with Biden on Air Force One on Friday — tested positive for COVID on Monday. Biden had tested negative on Sunday and Monday.

The new at-home COVID treatment is currently available in limited quantities to states and territories. Some states will get as few as 120 courses of treatment at first.

Staff, faculty and students who are accessing university facilities or programs will be required to get a COVID-19 vaccine booster shot.

Seven schools in the University of California system, Harvard University, Northwestern University and others are among those changing their plans in response to the highly transmissible variant.

San Diego County public health officials reported 819 new COVID-19 cases and 12 additional deaths associated with the virus in their latest data.

University of Washington research predicts the omicron wave will infect more than 400,000 people a day in the U.S. when it crests in about six weeks.

Vaccines still do a solid job at warding off hospitalization from omicron. So if you're young and healthy, why get a booster? Scientists explain how boosters help and the best timing to get one.

The alarming surge in COVID infections is prompting city leaders, heads of companies, and even sports officials to withdraw from public events that could potentially expose more people to the virus.