By CBS13 Staff

OAKLAND (CBS13) — Gov. Gavin Newsom was in Alameda County on Wednesday getting his COVID-19 vaccine booster shot.

Newsom was one of the nearly 15 million people whose first dose was the one-shot Johnson & Johnson vaccine.

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People who are 18 and older and who got Johnson & Johnson vaccine are recommended to get a booster shot, as long they were vaccinated two or more months ago.

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So, on Wednesday, Newsom got the Moderna vaccine booster.

Health experts say people who got the Johnson & Johnson vaccine can mix and match their booster, either getting the Pfizer or Moderna version.

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According to the CDC, adults who got either the Pfizer or Moderna vaccine only need to get a booster at this time if they are 65 years or older – or if they live in long-term care settings, have underlying medical conditions, or if they work or live in high-risk settings.