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A California University Tries to Shield an Entire City From Coronavirus


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DAVIS, Calif. — The coronavirus test center on A Street was bustling on a recent morning. Michael Duey was in line, as usual, with his teenage son. Margery Hayes waited for her wife in the parking lot. Dr. Elizabeth Pham hustled her children in for a quick pit stop.

Inside, each received a five-minute screening for the virus, administered and paid for by the University of California, Davis. Yet none of them is associated with the school.

All last fall, universities across the country were accused of enabling the pandemic’s spread by bringing back students who then endangered local residents, mingling with them in bars, stores and apartments. So U.C. Davis is trying something different.

Rather than turning the campus into a protective bubble for students and staff, as some schools have attempted, it has quietly spent the past six months making its campus bubble bigger — big enough, in fact, to encompass the entire city.

ImageThe university’s recreation center has been turned into a testing site.
The university’s recreation center has been turned into a testing site. Credit…Max Whittaker for The New York Times

Public health experts say the initiative is the most ambitious program of its type in the country and could be a model for other universities. U.C. Davis, part of the 10-campus University of California system, has made free coronavirus tests — twice weekly, with overnight results — available to all 69,500 people in the city of Davis and hundreds of nonresidents who just work there.

It has also trained dozens of graduate students to help with contact tracing; recruited hotel and apartment owners to provide free isolation and quarantine housing to anyone in town exposed to the virus; and hired some 275 undergraduate ambassadors to combat health disinformation and hand out free masks.

The university has also recently expanded campus wastewater testing into Davis, and in coming weeks plans to administer vaccinations at its coronavirus screening centers and to bring screening to some public school sites.

Funded by major philanthropic donations, state and federal grants and CARES Act money, the program, projected to cost up to $38 million, has caught more than 850 potential outbreaks in Davis since it got underway shortly before Thanksgiving, according to Brad H. Pollock, who chairs the university’s department of public health sciences and directs the project.

The mayor of Davis, Gloria Partida, calls the initiative “a big science project” that could help revive her pandemic-fatigued college town.


Davis has about a third of its county’s population but has logged only about 15 percent of its virus cases.Credit…Max Whittaker for The New York Times

Students make up roughly a third of the population in Davis. As they have dispersed to study remotely, the campus and the town have not only suffered financial losses but also been drained of much of their life force. Bars are closed. Streets are still. Hotels, bereft of parents and conferences, are generating little in bed taxes.

“I know the university felt it needed to get this right to be able to open up,” Ms. Partida said. “But for the community — this is the key to us getting back to normalcy.”

Though vaccines have begun to roll out, epidemiologists say playbooks like the one in Davis — masks, distance, hygiene and, in particular, cheap, rapid tests to detect cases quickly — may be the only way to reopen schools and businesses in the near term until the nation achieves herd immunity.

Some schools last year used aggressive testing and tracing to bring students back into residence halls and classrooms, but their protocols typically stopped at the campus boundaries. Testing was so costly, slow and hampered by shortages of processing reagents that medical labs strained just to meet the demand at the universities.

Meanwhile, many students returned to their college towns even if they were not planning to live in the dorms, either because they could not break pre-pandemic leases or because they preferred not to study remotely from their parents’ homes.


Davis residents waiting in line for a coronavirus test. Credit…Max Whittaker for The New York Times

“We heard a lot of anxiety from our community,” Ms. Partida said, “about what a disaster it was going to be when the students came back into town.”

At the same time, the local economy was reeling. So was the university. Kelly Ratliff, its vice chancellor for finance, operations and administration, said that at last count, lost revenue stood at more than $80 million, due in part to drastically reduced room and board payments.

With students not scheduled to return until late September, the university decided to exploit its lead time. “We had a chance to observe some of the missteps at other universities and we were dead set on not making those same mistakes,” said the chancellor, Gary May.

Richard Michelmore, a plant geneticist who directs the U.C. Davis Genome Center, urged the university to let him try to create an in-house center for coronavirus testing by repurposing a $400,000 machine normally used to identify plant DNA for agricultural breeding.

Within weeks, Dr. Michelmore’s lab was able to screen thousands of samples per day accurately, at low cost and with overnight results. That set the stage for frequent, wide-scale screening of asymptomatic students and inspired health experts to propose a joint public health project with the city.

“What does it mean to keep your campus well when everyone else is getting sick around you?” said Dr. Pollock, the project director. “The university is part of the community.”


The program has caught more than 850 potential outbreaks since it began shortly before Thanksgiving.Credit…Max Whittaker for The New York Times

By August, the university had invested in a second testing machine and drawn up a plan to cover the cost of additional personal protective equipment and screenings if the city would provide test sites and staffing.

By mid-September, Dr. Michelmore’s machine was testing incoming students, first by the hundreds and then by the thousands. In mid-November, with the costs down to just $6 per test, the first residents were screened at the Davis senior center. Since then, the project, known as Healthy Davis Together, has opened two more large screening centers in town.

The program also has deployed mobile screening centers and is processing tests for the University of California, Merced, and for employees and trainees at the U.C. Davis medical school campus in Sacramento. More screening kiosks are planned for elementary schools, which the city hopes can help pave the way for an in-person return to K-12 classrooms.

Dr. Pollock and others at the university are tracking results, with plans to publish findings not only in scholarly journals but in white papers that can share best practices more immediately.

Not everyone in the community has taken advantage of the program: About 35,000 people, or roughly half of the city, have come in at least once to be screened, and two-thirds of those were students or university employees, Dr. Michelmore said.

But he noted that participation had risen sharply since the holidays as more sites have opened. More than 160,000 tests have been processed, not counting diagnostic tests done for people with symptoms, and more than a half-dozen Davis residents have received free quarantine or isolation housing. The program has cost the university about $14.5 million, with about half of the money spent in town and half on campus, said Ms. Ratliff, the vice chancellor. She said the school expected the initiative to continue at least through 2021.

Though Davis has about a third of its county’s population, it has logged only about 15 percent of the coronavirus cases. That is partly because many in the college town can work from home. But it is also because of Healthy Davis Together, city officials and public health experts say.


Outdoor dining in downtown Davis.Credit…Max Whittaker for The New York Times

“We’ve taken some 850 people off the street who were walking around, asymptomatic,” Dr. Pollock said. “Every infection caught prevents, like, three more infections. And for every one of those three, three more get prevented, and so on. That has to make a difference, right?”

Outside the test center, Mr. Duey, a web developer, said twice-weekly testing had made it possible for his 14-year-old son, Bowen, to spend time with friends from school and to attend remote classes in masks in one another’s backyards. It also enabled his wife, a nurse practitioner, to quickly isolate after she became infected in December.

Ms. Hayes, 71, and her wife, Paula Ash, 70, who were getting tested in advance of a vaccine appointment, said they had seen TV ads about the free tests produced by the university and had come at the behest of their daughter, a local teacher. Dr. Pham, a family physician who had already gotten the vaccine, saw the screenings as a way for her teenage sons to finally visit their grandparents, whom they have not seen in months.

“Hey, better safe than sorry,” said Marc Hicks, 54, a school district employee whose infection was caught in November three days before he experienced symptoms. The lead time, he said, enabled him to notify his supervisor at work and made it possible for contact tracers to identify people he might have infected. He still comes in every week, he said, because he cannot be sure whether he is immune or not.

Many at the test centers, however, seemed to treat the screenings as a neighborly errand, part of the new normal in an abnormal time.

“My wife and I are doing it weekly,” said Lucas Frerichs, the city’s vice mayor. “I went over not long ago, and one of the school board members was ahead of me in line.”

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