Campus Messages

An archive of email messages sent to the entire UCSF community by the Chancellor and members of the Chancellor's Cabinet.

Pfizer Booster Shots Available for At-Risk People

Dear UCSF Community,

Next week, UCSF will begin offering COVID-19 vaccine booster shots based on guidelines from the U.S. Centers for Disease Control and Prevention (CDC) with support from the California Department of Public Health.

These booster shots provide extended protection against COVID-19, especially among those at increased risk for hospitalization and severe disease, including those over age 65, those with compromised immune systems, and those who work in health care settings.

We continue to urge everyone 12 years of age and older to be vaccinated against COVID-19, since unvaccinated persons remain at much higher risk of severe disease and death from COVID-19 than those who have been vaccinated.

Currently, the federal authorization for a booster dose is limited to use of the Pfizer COVID-19 vaccine. The CDC recommends that a single Pfizer COVID-19 vaccine booster dose be given at least 6 months after a person received their second Pfizer dose. The CDC does not recommend giving Pfizer vaccine booster shots to those who have received Janssen or Moderna vaccines.

Beginning Monday, Oct. 4, 2021, we will provide Pfizer booster doses to persons who received the second dose of the Pfizer vaccine in March 2021 or earlier who are:

  • Age 65 years and older or residing in a long-term care facility, or;
  • Age 50 through 64 years with underlying medical conditions or at increased risk of social inequities;
  • Age 18 through 64 years with underlying medical conditions, such as cancer, or at increased risk for COVID-19 exposure and transmission because of occupational or institutional setting, including those who work in health care settings.
Increasing Capacity for Vaccinations

We are increasing capacity at our drop-in vaccination clinics to provide Pfizer boosters, as well as first and second doses of vaccines for those unvaccinated. Patients, employees and learners are welcome at Parnassus Heights, Mission Bay, and Mount Zion locations. See the list of vaccination sites here:

While we have sufficient supply of COVID-19 vaccines to meet the needs of the UCSF community, we will have staffing limitations over the next few weeks. To reduce your wait time, please schedule an appointment by calling (415) 514-7328.

COVID-19 vaccines and Pfizer booster shots are also available at many neighborhood pharmacies, including CVS, Walgreens, and RiteAid. I encourage you to seek out a booster shot at place that is most convenient to you.

Meanwhile, UCSF is preparing to make more booster shots available to those who received the Janssen or Moderna COVID-19 vaccines and to begin vaccinating children aged 5 to 11, following federal authorization. As staffing allows, we will continue to increase capacity for vaccinations at UCSF locations.

We appreciate everything you have done to end this pandemic. We ask for your continued cooperation and patience while we roll out the next phase of COVID-19 vaccinations. If you have questions, please send an email to [email protected].



Josh Adler, MD
Chief Clinical Officer