Los Angeles County has been so overwhelmed it is running out of oxygen, with ambulance crews instructed to use oxygen only for their worst-case patients. Arizona, once heralded for turning the corner after a summer surge, now has 69 of every 100,000 residents hospitalized with the virus — the highest rate in the country. "The virus is just basically transmitting almost uninhibited through our population,” said Dr. Joe Gerald, who has been tracking the spread of the virus and was among those urging a shelter-in-place order.

Interactive program promotes healthy aging by improving physical and mental well-being.

Anyone making a New Year’s resolution can set themselves up for success by understanding how people can effectively make changes in their lives.

Health experts say the number of COVID-19 cases is just going to rise as the weeks progress, due to holiday gatherings and travel. Beth Smith, senior director of marketing and communications at the College of Medicine – Phoenix, says in order to save lives, they need to change the perception that COVID-19 isn't that deadly. Other health officials in the Valley agree.

Continuing coverage: Ask anyone in medicine and they'll tell you, the COVID-19 pandemic was the answer to their calling. "It's reminding us why we got into this field in the first place, said Aaron Cedric Llanes, UArizona medical student. So many have heard the call in fact, 7000 applied to the University of Arizona's College of Medicine in 2020, the most ever. "Less than 2% will get an offer," said Dr. Glen Fogerty.

Ask anyone in medicine and they'll tell you, the COVID-19 pandemic was the answer to their calling. "It's reminding us why we got into this field in the first place, said Aaron Cedric Llanes, UArizona medical student. So many have heard the call in fact, 7000 applied to the University of Arizona's College of Medicine in 2020, the most ever. "Less than 2% will get an offer," said Dr. Glen Fogerty.

According to the Arizona Department of Health Services, more than 17,000 positive COVID-19 cases were reported Sunday. Those are numbers that experts say are likely to increase after an estimated 84 million Americans traveled in recent weeks. "They just don't think it's them. 'I'm not the cause, I'm not the case, it's not going to happen to me,'" said Dr. Purnima Madhivanan, an associate professor at the Mel and Enid Zuckerman College of Public Health.

Arizona has the highest rate of new COVID-19 cases in the United States, data from the Centers for Disease Control and Prevention says. Arizona's rate of positive new coronavirus cases over the past seven days was 121.8 cases per 100,000 people, which was higher than any other state in the country. "We have now all but locked in a major humanitarian crisis during the Christmas–New Year holiday with hundreds of preventable deaths per week," Dr. Joe Gerald, of the Mel and Enid Zuckerman College of Public Health, wrote in a Dec. 18 report.

Continuing coverage: A new study has found that a novel T cell genetically engineered by University of Arizona Health Sciences researcher Michael Kuhns is able to target and attack pathogenic T cells that cause Type 1 diabetes, which could lead to new immunotherapy treatments.

Continuing coverage: Sleep researchers explain why so many people during the COVID-19 pandemic struggle with insomnia. “We've seen a lot of problems lately, especially with people having trouble disconnecting at night, where they just with everything going on during the day, they have a real hard time disconnecting,” said Michael Grandner, who runs the Sleep and Health Research program at the University of Arizona Department of Psychiatry.