WA vaccine eligibility to expand to more groups on March 22

A syringe of the Moderna COVID-19 vaccine is shown Thursday, March 4, 2021, at a drive-up mass vaccination site in Puyallup, Wash., south of Seattle. Officials said they expected to deliver approximately 2500 second doses of the Moderna COVID-19 vaccine at the site Thursday. (AP Photo/Ted S. Warren)

Dr. Greg Hoeksema fills a syringe with the Moderna COVID-19 vaccine, Thursday, March 4, 2021, at a drive-up mass vaccination site in Puyallup, Wash., south of Seattle. Officials said they expected to deliver approximately 2500 second doses of the Moderna COVID-19 vaccine at the site Thursday. (AP Photo/Ted S. Warren)

Workers stand near tents at a drive-up mass vaccination site, Thursday, March 4, 2021, in Puyallup, Wash., south of Seattle. Officials said they expected to deliver approximately 2500 second doses of the Moderna COVID-19 vaccine at the site Thursday. (AP Photo/Ted S. Warren)