CA records more than 1,400 cases of COVID-19 in vaccinated individuals

Photo of Oakland Coliseum Vaccination Site
Lisi Ludwig/Senior Staff
About 1,400 breakthrough cases — or cases where anyone has tested positive for COVID-19 more than 14 days after completing their respective vaccination series — have been recorded by fully vaccinated individuals in California. These cases are likely due to the vaccine not having obtained a sufficient immune response in the vaccinated individual.

California has recorded about 1,400 breakthrough cases of COVID-19 in fully vaccinated people from Jan. 1 through April 21.
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