UC Davis Health is offering COVID-19 vaccines and treatmentsCOVID-19 timeline: Reflecting on how it began and how far we’ve come
UC Davis diagnosed and treated the nation’s first-known case of community-spread COVID‑19 in February 2020. Since then, we have remained at the forefront of the global pandemic response.
In the two years since that first case, our health experts have continued to care for our community. UC Davis Health was among the first to administer COVID-19 vaccines to the public, and we still offer COVID vaccines and boosters to anyone who wants them. We've provided the latest information on COVID testing and participated in many clinical trials and research opportunities to help save lives.
“Since that first day, every person at UC Davis Health has played a vital role as we confronted this unprecedented crisis,” said David Lubarsky, UC Davis Health’s CEO and the Vice Chancellor of Human Health Sciences for UC Davis. “They’ve shown the utmost grace under pressure, while serving our patients and collaborating with our community partners in the interest of public health — for everyone.”
Take a look back at all we've gone through and accomplished together as a community between December 2019 and April 2022.
April 2022
Learning lessons of long COVID
Two years into the COVID-19 pandemic, UC Davis experts reveal more of what they’ve learned about long COVID and the patients who experience lasting symptoms. Read more: 9 things we've learned about COVID long haulers
March 2022
Mar. 8 – UC Davis Health partners with Pfizer on two new clinical trials to test the COVID-19 booster vaccine in healthy adults. These trials look to test the effectiveness of different strength booster doses and test heart muscle protein levels after a booster shot.
January 2022
Omicron takes over as the dominant strain of COVID-19 in the U.S., causing an uptick in cases and long lines for COVID-19 tests.
Jan. 25 – Paxlovid is available at UC Davis Health
UC Davis Health begins use of Pfizer’s COVID-19 treatment pill Paxlovid. For the time being, it’s only given at UC Davis Medical Center and outpatient clinics to protect at-risk patients.
Jan. 14 – CDC recommends N95 masks
The CDC updates its mask recommendations to note that N95 or KN95 are the best faces masks to protect against the omicron variant and other COVID-19 mutations.
Jan. 20 – UC Davis researchers explain one of the key COVID-19 symptoms: why people lose their sense of smell.
Jan. 25 – Treating COVID-19 patients with a pill
UC Davis Health is one of the first places in Northern California to treat patients with a pill to slow COVID-19.
December 2021
Dec. 1 – UC Davis research shows vaccinated health care workers have low risk of spreading COVID-19 to others.
Dec. 20 – UC requires health care workers get COVID-19 boosters
The UC Office of the President announces that all UC health care workers are required to receive a COVID-19 booster dose by Jan. 31, 2022.
Dec. 28 – UC Davis Medical Center treats record number of COVID patients
The hospital sees a record high 300 patients in the Emergency Department. This is due to a combination of COVID-related illnesses, flu, traffic accidents, and patients with chronic diseases.
Dec. 29 – UC Davis outreach efforts test 17,000 people to slow COVID-19 spread in migrant communities.
November 2021
Nov. 2 – Pfizer vaccine approved for children age 5-11
A few days after the FDA approved COVID-19 vaccines for children ages 5-11, the CDC also recommends pediatric vaccinations for the Pfizer vaccine.
Nov. 19 – For the third time, the CDC expands eligibility for COVID-19 booster shots to everyone age 18 and older who received a Pfizer or Modern vaccine.
Nov. 26 – Omicron is the newest variant
A new variant is classified and named Omicron by the WHO after first being discovered a few days earlier in South Africa.
October 2021
UC Davis School of Medicine leads effort to vaccinate underserved communities
Several physicians from UC Davis School of Medicine volunteer their time to connect with community partners across the Sacramento region to set up pop-up COVID-19 vaccination clinics. They visit grocery stores, churches, schools and other popular spots in neighborhoods with low vaccination rates.
Oct. 21 – Booster eligibility expanded
The CDC announces an expanded eligibility for COVID-19 booster and third doses to include anyone age 18 and older who received a Johnson & Johnson vaccine, as well as those who work in jobs where there is a high risk of getting COVID-19.
September 2021
Sept. 1 – University of California reaches deadline requiring all employees, staff and students to be vaccinated against COVID-19 or have an informed exemption completed. View the UC Davis Health study that shows how quickly COVID-19 vaccines reduced infections among health care workers.
COVID-19 booster doses approved for the first time
The FDA and CDC approve COVID-19 booster or third doses for certain at-risk populations, such as those who are immunocompromised or people age 65 and older.
July 2021
A newer and more contagious strain of COVID-19, called the Delta variant, becomes of greater concern as areas across the U.S. see a spike in cases, even among vaccinated Americans.
June 2021
June 15 – California reopens
After more than a year of COVID-19 restrictions, California lifts capacity limits and social distancing requirements. Vaccinated people are also allowed to be indoors without a mask.
May 2021
May 10 – Children 12-15 can get the COVID-19 vaccine
The FDA gives emergency use authorization for the Pfizer vaccine to be used in children ages 12-15.
April 2021
Apr. 1 – COVID-19 vaccine eligibility expands for more adults
Californians 50 years and older are eligible to receive the COVID-19 vaccine.
April 15 – Californians age 16 and older are eligible to receive the COVID-19 vaccine. However, Pfizer is the only approved shot for ages 16 and 17.
March 2021
Mar. 8 – CDC announces people who are fully vaccinated can start returning to normal life.
February 2021
Feb. 2 – Shielding a city from COVID-19
The Healthy Davis Together COVID-prevention project is the most ambitious of its type in the country and could be a model for other universities, the New York Times notes in a feature article. The joint City of Davis-UC Davis initiative aims to facilitate a coordinated and gradual return to regular activities and reintegration of UC Davis students, while preventing the spread of COVID-19 in the Davis community.
Feb. 6 – Helping reach vulnerable communities
UC Davis Health partners with the Sacramento County Department of Public Health and Dignity Health to host the first of many planned community-based COVID-19 vaccination clinics, designed to reach vulnerable populations.
Feb. 21 – As U.S. deaths top 500,000, UC Davis Health delivers more than 50,000 COVID-19 vaccines.
January 2021
Jan. 12 – UC Davis Health launches COVID-19 patient vaccinations
UC Davis Health announces it will begin vaccinating its patients. The initial group of patients is identified as the most vulnerable: those age 75 and older with underlying conditions.
Jan. 15 – Global COVID-19 deaths reach 2 million.
Jan. 26 – COVID-19 vaccinations expand for patients
UC Davis Health announces it's opening vaccinations to patients age 65 and older.
Jan. 28 – Farmworker safety initiative
To help reduce the pandemic’s impacts on California’s 800,000 farmworkers, UC Davis launches the COVID-19 Statewide Agriculture and Farmworker Education training and safety program. The state-funded project is led by experts at the UC Davis Western Center for Agricultural Health and Safety, which includes investigators from the UC Davis School of Medicine and the UC Davis School of Veterinary Medicine.
Jan. 28 – Multiple COVID-19 clinical trials underway locally
The UC Davis School of Medicine announces it's actively recruiting for more than a dozen clinical trials in the search for new COVID-19 treatments.
December 2020
Dec. 7 – Another vaccine trial underway
UC Davis Health launches clinical trials for the easier-to-store Novavax COVID-19 vaccine. The overall trial prioritizes highly impacted groups such as Latino, African American and Native American communities.
Dec. 11 – First COVID-19 vaccine approved
The FDA authorizes the Pfizer-BioNTech COVID-19 vaccine for emergency use after data shows 95% efficacy.
Dec. 11 – A new COVID-19 exposure-warning app
The state of California rolls out CA COVID Notify. The Bluetooth-driven app sends anonymous notifications when users have been in close contact with someone who tests positive for COVID-19. UC Davis and six other UC campuses pilot the project, based on Google and Apple’s exposure notification technology.
Dec. 15 – Pfizer COVID-19 vaccine arrives
As the U.S. death toll surpasses 300,000, UC Davis Health becomes among the nation's first health systems to receive an initial allotment of the Pfizer-BioNTech COVID-19 vaccine. It begins inoculating frontline health care workers three hours later. California targets UC Davis Health for the vaccine due to its storage capability, highest-risk health care population, and community distribution ability.
Dec. 18 – The FDA approves the Moderna vaccine for emergency use.
Dec. 22 – Moderna vaccine arrives
In a dose of holiday good news, UC Davis Medical Center receives its initial allotment of the Moderna vaccine. Data from clinical trials suggests the COVID-19 vaccine is 94% effective.
November 2020
Nov. 12 – ‘Nothing else as fast and accurate’
UC Davis Health becomes the first in the region and among the first in the nation to use rapid, combined molecular tests at the point of care. The highly accurate rapid test can check for both COVID-19 and flu in minutes.
October 2020
Oct. 1 – Free COVID-19 testing for Central Valley farmworkers
Four UC Davis research centers receive a $3.7 million NIH grant to test workers in the Central Valley, where the COVID-19 pandemic has reached alarming levels.
Oct. 12 – Can an antibody cocktail prevent COVID-19 infection?
UC Davis Health participates in a clinical trial of the Regeneron monoclonal antibody combination. But this time, the aim is to prevent infection in people with close exposure to a diagnosed patient, such as a household member.
Oct. 28 – UC Davis Health launches region's first clinic for long haulers
UC Davis Health launches a Post-COVID-19 Clinic, becoming one of only a handful of U.S. health systems with a dedicated venue for so-called "long-haul" patients.
September 2020
Sept. 10 – Telehealth for at-risk Central Valley residents
The ACTIVATE initiative, a public-private pilot to bring telehealth services to underserved rural residents like farmworkers, is launched in Merced County.
Sept. 14 – Pushing to prevent a ‘twindemic’
To avoid overlapping respiratory illness and preserve hospital capacity for COVID-19 surges, UC Davis Health promotes the importance of flu vaccinations during the pandemic. Drive-through flu shot events also help boost participation.
September – Military doctors battle against COVID-19
Emergency medicine physician and Army reservist Josh Elder returns from overseas deployment supporting special-ops troops with trauma care and COVID-19 prevention. He’s one of a number of UC Davis Health military members fighting against COVID-19 both home and abroad. In addition, emergency medicine physician and Air Force Lt. Col. Rory Stuart was awarded the Bronze Star for early COVID-response work in Afghanistan.
Sept. 16 – Historic respiratory pandemic, meet historic wildfires
UC Davis pulmonologists help Californians understand how heavy wildfire smoke increases COVID-19 risks and which respiratory symptoms indicate COVID-19.
Sept. 28 – Global deaths from COVID-19 reach 1 million.
August 2020
Aug. 12 – Part of a major COVID-19 vaccine trial
UC Davis Health partners with Pfizer Inc. and Germany based BioNTech SE to participate in a global study of an investigational COVID-19 vaccine. The first of the university’s 200 vaccine candidate participants receive their shots a week later.
July 2020
July 20 – Testing an antibody cocktail
UC Davis Health announces a federal grant to test a new antibody combination as a possible therapy for reducing viral shedding and disease progression.
Expert advice for stressed family caregivers
The Family Caregiving Institute at the Betty Irene Moore School of Nursing provides actionable advice for Americans caring for aging spouses or parents during the COVID-19 pandemic. It offers road maps for supporting older relatives during social distancing, reducing their transmission risk, recognizing infection, and providing or obtaining care.
July 23 – A new ICU partnership in a hotspot county
UC Davis Health and Adventist Health Lodi Memorial partner to launch a 24/7 telehealth link between the Lodi hospital’s intensive care unit. The ICU has been caring for many COVID-19 patients in highly impacted San Joaquin County.
July 30 – Clinical guidance to help improve patient care
A primer on coronavirus and diagnostic errors becomes the latest COVID-19 clinical guide released by the Agency for Healthcare Research and Quality Patient Safety Network (PSNet). It's co-edited by internal medicine professor Patrick Romano and nursing professor Debra Bakerjian. The primer aims to improve care for all patients and points out that delayed diagnosis can lead to delayed treatment or preventable COVID-19 transmission.
May 2020
May 14 – Panel examines COVID-19 pandemic disparities
The UC Davis Health Office for Health Equity, Diversity and Inclusion hosts a panel to explain reasons for health disparities related to COVID-19, and what can be done. Physicians at “COVID-19: Addressing Health Disparities in the African American Community” say that social determinants of health are a major reason African Americans and Latinos in California are infected with COVID-19 at rates higher than whites.
Mid-May – Helping in New York as it's overrun by COVID-19
Two emergency physicians, Alex Schmalz and Nick Sawyer, from UC Davis Health travel to Elmhurst Hospital in New York to help medical personnel overwhelmed by the large number of COVID-19 cases. UC Davis Health nurse practitioner Paula Wagner also volunteers her time for 13 days at a Brooklyn hospital.
May 19 – Tracking a troubling syndrome in children
UC Davis Children’s Hospital becomes part of an international group researching multisystem inflammatory syndrome in children (MIS-C). Researchers deem this a new form of COVID-19 likened to toxic shock syndrome and Kawasaki disease.
May 21 – UC Davis Health performs 10,000th COVID-19 test
Clinical pathologists perform their 10,000th COVID-19 molecular test. UC Davis is able to test all hospitalized patients at UC Davis Medical Center to help ensure safety at the facility. The health system also processes tests gathered at community sites — which helps identify that working-age Latinos are getting infected and dying in disproportionately high numbers.
May 28 – U.S. COVID-19 deaths exceed 100,000.
April 2020
Apr. 6 – Boosting California’s COVID-19 testing capacity
After steadily increasing its own testing, UC Davis Health is named to California Gov. Gavin Newsom’s COVID-19 Testing Task Force, a public-private collaboration to increase statewide capacity. The health system can already run up to 400 tests per day. UC Davis Health works to expand into a high-volume testing hub with its Roche Diagnostics cobas 6800 robot.
Apr. 16 – Reporting the first trial of a promising antiviral
Preliminary results emerge from the first small clinical trial of the antiviral therapy remdesivir, conducted at UC Davis Health and hospitals worldwide. Nearly two-thirds of the severely ill, hospitalized COVID-19 patients who received the drug improved, with no new safety concerns. WebMD’s Chief Medical Officer interviews site principal investigator Stuart Cohen about the results, which are published in the New England Journal of Medicine. Larger, controlled trials follow, and remdesivir emerges as one of the most promising in the early field of potential treatments.
UC Davis joins two worldwide COVID-19 clinical studies
UC Davis Health becomes one of 75 sites worldwide evaluating the investigational antiviral remdesivir. With emergency FDA approval, UC Davis clinicians used remdesivir in February to successfully treat the nation’s index case.
Apr. 29 – Testing begins on a potential COVID-19 vaccine
Biopharmaceutical company Verndari, Inc. announces the start of preclinical testing with the UC Davis’ Mouse Biology Program to evaluate a potential vaccine and dermal patch delivery system for COVID-19.
Apr. 29 – Plasma transfusions for COVID-19
Two UC Davis Health patients with COVID-19 receive transfusions from a blood donor who recovered from the virus. This is part of a national initiative investigating the potential benefits of convalescent plasma. It’s hoped the treatment may boost a sick patient’s ability to neutralize COVID-19 and its effects.
March 2020
Adjusting to deliver essential non-COVID care
As the main referral center for a 33-county area, UC Davis Medical Center prepares for a potential surge in COVID-19 patients — while also adapting operations to continue essential procedures, such as breast cancer surgeries.
Mar. 11 – The World Health Organization (WHO) declares a global COVID-19 pandemic.
Mar. 13 – The U.S. declares a national emergency.
Mar. 16 – California issues a sweeping stay-at-home order.
Mar. 24 – UC Davis Health sees more than 1,000 patients per day via telehealth video visit, a 5,000% increase in just two weeks.
Mar. 30 – Sharing lessons from our COVID-19 index case
UC Davis Health clinicians publish a case study about their COVID-19 index patient in the journal Clinical Infectious Diseases. UC Davis hematopathologists reported leukemia-like blood test results from the case. They advised fellow clinicians to order COVID-19 testing instead of cancer screenings for certain symptoms.
Setting state and national COVID-19 standards
UC Davis Health faculty help set comprehensive standards for COVID-19 pandemic-related patient care and workforce safety. Examples:
- Cardiothoracic surgeon David Cooke, assists in writing national COVID-19 guidelines for triage of thoracic surgery patients, through the American College of Surgeons (ACS) and thoracic societies.
- Surgery chair and ACS regent Diana Farmer, helps develop COVID-19 best practices and safety standards for surgeons.
- Otolaryngology chair Gregory Farwell, helps establish an American Head and Neck Society best-practices repository.
- Burn surgeons David Greenhalgh, and Tina Palmieri, and nurse manager Len Sterling, help U.S. burn centers plan for continuous burn care during ICU surges.
- Pediatrics chair Satyan Lakshminrusimha, neonatology chair Mark Underwood, and pediatric infectious disease professors Elizabeth Partridge, and Jean Wiedeman, help co-author COVID-19 guidelines in the American Journal of Perinatology.
February 2020
Feb. 26 – UC Davis treats the first U.S. community spread case of COVID-19
UC Davis Health announces it is treating the first apparent case of COVID-19 acquired by community spread, driving changes to national testing guidelines.
Feb. 29 – The first suspected U.S. death is reported near Seattle.
January 2020
Jan. 22 – UC Davis Health pulls together a working group to begin planning for COVID-19 identification and case management.
December 2019
An outbreak of acute respiratory illness, linked to a novel coronavirus (COVID-19), emerges in China.
Latest on COVID-19 from UC Davis Health
When to contact your provider
If you have serious symptoms of illness, contact your primary care provider. UC Davis Health patients can use the MyUCDavisHealth symptom tracker to evaluate whether to seek help. Telehealth video visits and Express Care are also available.
If you have a medical emergency, call 911 and notify them of your COVID-19 symptoms.
Ways to seek treatment
If you test positive for COVID-19 at home, you can contact your primary care provider about a prescription for Paxlovid.
Patients who receive primary care or specialty care from UC Davis Health can schedule a telehealth video visit with Express Care.
Visitor Policies
To help limit spread of COVID-19, we have policies for visits to our hospital and outpatient clinics.