The Los Angeles Times reports that 40% of inmates in California’s corrections system have received the COVID-19 vaccine, a figure praised by prison advocates who say that only a fraction of the state’s vaccine supply is needed to protect a population that’s among the most vulnerable to the virus.

The vaccinations began Dec. 22 according to California Correctional Health Care Services. Currently 37,588 incarcerated individuals and 24,959 staff members have received the vaccine.

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