State health officials are breathing a sigh of relief. But they are also cautious: More than 40 million Californians live in counties where COVID-19 risk is deemed "widespread."

The crisis starts around 2 a.m. at a hospital in Mendocino County, Calif. A compressor gives out, giving the staff two hours to use the coronavirus vaccines before they are declared unusable.

Amid a surge in COVID-19 cases that have inundated ICUs, the Southern California county is also asking ambulance crews to conserve bottled oxygen.

Hospital officials in San Jose are investigating whether an inflatable costume contributed to an emergency department outbreak. One hospital employee died after testing positive for the coronavirus.

Gov. Gavin Newsom made the announcement during an online conversation about the pandemic with Dr. Anthony Fauci, but he offered little additional information about the circumstances of the diagnosis.

Coronavirus cases in the state have skyrocketed over the last two months, and the ICU capacity is now zero in Southern California and the San Joaquin Valley.

California Gov. Gavin Newsom said the state has 60 refrigerated units available if needed. He also said that 5,000 body bags were distributed to some of the hardest-hit counties.

When the coronavirus hit, thousands of unsheltered people in the state were moved into hotels under a plan known as "Project Roomkey." Now many are ending up back on the street.

California's iconic old-growth redwoods are incredibly resilient and built to survive fires. But even they may find it harder to rebound amid the mounting impacts of climate change.

With a spike in COVID-19 infections, hospitals in California's San Joaquin Valley are suffering from a staffing shortage. It's made worse because hundreds of health care workers are quarantined.

The Labor Day 2019 blaze aboard the Conception killed 33 passengers and one crew member. Prosecutors say the vessel's captain failed to follow safety rules.

Most of California is under the state's highest risk-level assessment, restricting most indoor activities and gatherings.

Newsom said on Twitter that his children came into contact with a California Highway Patrol officer who tested positive for the virus. He said everyone in his family has tested negative so far.

The shift into the "purple tier" for most counties comes as the number of daily new coronavirus cases doubled in the past 10 days, Gov. Gavin Newsom said. He also apologized for breaking the rules.

California has now joined Texas in becoming a state with more than 1 million confirmed coronavirus cases since the start of the pandemic, according to data from Johns Hopkins University.