Dr. Joe Gerald, an associate professor in the University of Arizona Zuckerman College of Public Health, provides and update in his weekly COVID-19 report.

Continued coverage: Promising results have come out of a new clinical trial at the University of Arizona Health Sciences investigating a personalized cancer vaccine for people with head and neck cancer. The researchers note that it's a very small study and still preliminary work, but their early results are looking good.

Traditional healers, who once played critical roles in governance and health care in the Navajo Nation, are dwindling in number and influence, experts and community leaders say, even as a deadly coronavirus assaults the tribe. Michelle Kahn-John, a professor of nursing at the University of Arizona and secretary of the Diné Hataalii Association, is quoted.

Beyond just feeling better and like you can get through the day a little easier (two major wins), finding ways to relieve stress and anxiety is also good for your physical health, says Ester Sternberg, MD, professor of medicine in the University of Arizona College of Medicine, Tucson, and research director of the Andrew Weil Center for Integrative Medicine.

Researchers at the University of Arizona College of Medicine in Tucson have found that people who have had COVID-19 develop long-lasting immunity. Their study appears in the journal Immunity.

A clinical trial at the University of Arizona Health Sciences designed to study the safety and effectiveness of a personalized cancer vaccine in combination with the immunotherapy drug Pembrolizumab will expand its cohort after promising preliminary data was presented at the annual meeting of the Society for the Immunotherapy of Cancer.

The U.S. Centers for Disease Control and Prevention says wearing cloth masks not only keeps people from unknowingly transmitting the virus, it keeps people from inhaling the virus from the air. Saskia Popescu, an infectious disease epidemiologist at the University of Arizona, tweeted, "We know that even fabric masks offer some variable protection for the wearer, but I think the bigger issue is that the CDC has to reiterate this to get people to wear a mask."

A study published in the journal "Nature" suggests reducing restaurant capacity even further to slow down the spread of COVID-19. Dr. Shad Marvasti, with the University of Arizona's College of Medicine, says he is not surprised the study identified restaurants as high risk when they are operating at normal conditions. But he says Arizona leaders should take drastic action to stop the current spike in cases.

A clinical trial is being conducted at the University of Arizona Health Sciences to study a personalized vaccine in combination with an FDA-approved immunotherapy drug.

Dan Derksen, associate vice president for health equity, outreach and interprofessional activities at the University of Arizona Health Sciences, said the state might have to consider measures such as the stay-at-home orders imposed this summer to protect the availability of hospital beds.