Out of over 20.4 million fully vaccinated individuals, 10,430 post-vaccination cases (0.051%) have been identified.
At least 728 individuals identified as post-vaccination COVID-19 cases were hospitalized. Approximately 50% of cases have missing hospitalization data. A post-vaccine case may have been hospitalized for a condition unrelated to COVID-19 reason but were tested for COVID-19 upon admission.
Among post-vaccination cases identified, at least 74 people have died. It is unknown if the primary cause of death in these cases was COVID-19 or if there were other contributory or alternate causes.
https://www.cdph.ca.gov/Programs/CID/DCDC/Pages/COVID-19/Post-Vaccine-COVID19-Cases.aspx