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Officials in Orange County and elsewhere in California are preparing to close a number of COVID-19 mass vaccination sites as bookings for appointments continue to drop dramatically and authorities look to shift doses to mobile vaccine clinics, pharmacies and doctor’s offices.

Orange County officials said the demand for first doses has dropped by over 75% since the end of April. As a result, efforts will be made to boost vaccine clinics in neighborhoods. The county said that on June 6, it will close mass vaccination sites at the Anaheim Convention Center, OC Fair & Event Center, Soka University and Santa Ana College.

The last first-dose Moderna appointments will be offered Saturday, and the last first-dose Pfizer appointments will be offered May 15.

“Vaccine supply has become more plentiful, and alternative distribution channels, such as local pharmacies, hospitals, healthcare systems, community clinics and providers are more actively administering doses,” county officials said.

Read the full story on LATimes.com.