See our Omicron surge page for up-to-date guidance on testing, vaccination, masking, isolation, and quarantine.

Emergency Regional Stay Home Order. Bay Area ICUs are near capacity. Stay home except for essential tasks. Keep errands short. Don't gather with anyone outside your household. Cancel plans for non-essential travel. Learn more.

311 City Services
  • Online Services
  • For City services in many
  • languages, call
  • 311 or 510-981-2489

Translation Disclaimer

Quick Links


City Manager's Office
City Manager's Office
Press Contact: Matthai Chakko, (510) 510 981-7008


Berkeley, California (Friday, December 03, 2021) - Effective, quick work by health care providers and public health case investigators identified five mildly symptomatic COVID-19 cases involving the Omicron variant among Alameda County residents.

These cases are among 12 local COVID-19 cases linked to a November 27th Wisconsin wedding, which one of these individuals attended upon return from international travel. A State lab used genomic sequencing to identify the five infected with the COVID-19 Omicron variant, which is now being detected around the country and the world.

These individuals are between the ages of 18-49. One individual is a resident of the City of Berkeley, which has a separate health jurisdiction, and the remaining 11 are residents in the rest of Alameda County. All 12 individuals were vaccinated, and most had received boosters. They are mildly symptomatic. No one has been hospitalized. Genomic sequencing data is not yet available for all 12 cases.

Alameda County and the City of Berkeley Public Health Departments are investigating these cases with the support of the California Department of Public Health. Close contacts are being notified and provided with isolation and quarantine guidance.

Public health officials continue to be vigilant and are monitoring evidence of this variant's transmissibility and the severity of illness resulting from infection. We don't yet know how Omicron will impact a highly vaccinated region like the Bay Area. We remind residents that vaccination continues to provide the best protection against severe illness from COVID-19 that could result in hospitalization and death.

Residents should continue to utilize all strategies that we know work to prevent the spread of COVID-19:

  • Get vaccinated and boosted, if eligible
  • Stay home if sick
  • Get tested if symptomatic or exposed
  • Wear a mask indoors
  • Wash your hands
  • Avoid crowded and poorly ventilated indoor settings
  • If gathering or traveling, get tested before and after


The County of Alameda and City of Berkeley will not provide further comment on these cases.


Keep up with City of Berkeley news via our News page, email or .

Home | Residents | Businesses | COVID-19 | Services | Elected Officials
Web Policy | Text-Only Site Map | Contact Us
City of Berkeley - Central Administrative Offices, 2180 Milvia St, Berkeley, CA 94704
(510) 981-CITY/2489 or 311 from any landline in Berkeley
TTY: (510) 981-6903