Kern County Fairgrounds max vaccination site to begin offering drive-thru service Drive-thru services begin Wednesday and last updated 2021-04-09 13:28:26-04 BAKERSFIELD, Calif. (KERO) â As the race to vaccinate as many people as possible ramps up Kern County announced that the fairgrounds will now offer drive-thru vaccinations starting next week. The mass vaccination clinic at the Kern County Fairgrounds had previously been set up for walk-thru services. Kern County is offering vaccines for anyone 16 and older. Currently, only the Pfizer vaccine is authorized for anyone 16 and older. That will be used for both walk-up and drive-thru vaccines at the fairgrounds.