A new study from the University of Hong Kong offers preliminary information that could explain why this new coronavirus variant may be more transmissible.
Starting Wednesday, a statewide mask mandate was back in effect, but vaccinated San Francisco residents will be allowed to go without face coverings inside gyms and workplaces.
The Federal Reserve is opening the door to possible interest rate hikes earlier next year than had been expected, as it wrestles with the highest inflation in nearly four decades.
A new statewide mask mandate in California went into effect Wednesday, bringing the total number of states with mask mandates to 10. That has some public health advocates worried as omicron spreads.
The abortion pill mifepristone was approved in 2000 but still faces layers of restrictions. Advocates want the FDA to permanently allow patients to receive the pill by mail instead of in person.
The Moderna vaccine's ability to shield against infection drops sharply when tested on the omicron variant. But getting a booster pumps the protection back up again, new research suggests.
As unvaccinated COVID-19 patients fill ICU and acute care beds in Colorado, patients with other ailments are being turned away, and health care workers are reaching a new breaking point.
State health officials said samples from the Red Hill shaft contained petroleum levels 350 times the level considered safe. Some 3,000 military members and families were moved to temporary housing.