San Diego County delays joining the state's Blue Shield vaccine program ABC 10News and last updated 2021-03-12 10:39:29-05 SAN DIEGO (KGTV) - San Diego County has not yet opted in to the state's vaccine distribution deal with Blue Shield of California. As of Wednesday, the only county to participate, so far, is Kern County. On Thursday, ABC 10News was unable to get an interview with County Supervisor Chair Nathan Fletcher, but at Wednesday's county press conference, he said in part, "We're working with Blue Shield. We're in ongoing discussions. We have some questions and there are active talks that are underway ... [Nothing in the] nature of the ongoing discussion is impacting our ability to get vaccines or impacting our ability to administer vaccines."