https://www.siliconvalley.com/2021/04/02/costco-opens-up-single-shot-johnson-johnson-covid-vaccine-appointments-at-stores-across-the-bay-area/

Costco on Friday opened up appointments for Johnson & Johnson’s single-dose COVID-19 vaccine at nearly two dozen stores across the Bay Area, substantially expanding the superstore chain’s vaccination offerings in the region.

Appointments are available to anyone who meets California’s eligibility requirements, including people who are 50 or older, those ages 16-49 with high-risk health conditions or disabilities, people experiencing homelessness and workers in healthcare, food and agriculture, education, public transit and emergency services.