Although Alameda County announced it was ending its current mask mandate on Friday, for the time being, the Lab will continue to require masking on Lab sites regardless of an individual’s vaccination status. The Lab is waiting to see if Alameda County’s move last Thursday to the CDC’s MEDIUM (yellow) community level (from HIGH) is sustained. The Lab will evaluate the local conditions this Thursday, when the CDC issues its weekly update, and make any adjustments to Lab COVID protocols.

Masks are required indoors for all no matter the vaccination status.

Masks are required outdoors for people who are less than six feet from others no matter the vaccination status.

Masks may be removed outdoors when actively eating and drinking, even if less than 6 feet apart. Note: When eating and drinking indoors, a six-foot distance must be maintained.

An acceptable mask is:

  • N95 respirator (without exhalation valve) - all are encouraged to use this greater level of protection

  • KN95 or KF94 mask

  • Surgical-type mask

  • Cloth face covering worn over a surgical-type mask (double-masking)

  • Filtered cloth face covering

Masks are not required when alone in a room with the door shut.

Masks are required at all times on the Lab's shuttles and in Health Services (Building 26).


Required: COVID booster by Feb. 28 or within 30 days of becoming medically eligible for booster.

Testing Locations: Potter St., Building 50 auditorium lobby & Building 76, 220A

Report: COVID positive results to Health Services @ 510-486-6266 for both on site and teleworkers. If you cannot reach Health Services due to the overwhelming volume of calls you can also reach the COVID info line at 510-486-5000.

Weekly: COVID symptom check if coming on site

When to Contact Health Services: You are required to contact Health Services at 510-486-6266 if:

  • You have COVID symptoms

  • You have a positive test for COVID

  • You have close contact with someone who has COVID or has COVID symptoms. Refer to Chapter 46.8.A for details.

In all three instances DO NOT COME TO THE LAB. CALL Health Services at 510-486-6266 for guidance.



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Contact the COVID Info Line (M-Th 8 a.m.-4 p.m. / F 8 a.m.-1 p.m.) 510-486-5000 ::: Fill out the feedback form ::: Email at covidinfo@lbl.gov

Need help after hours? Contact the Site Operations Center 24/7 510-486-6999