SACRAMENTO, Calif. — California Gov. Gavin Newsom will quarantine for 10 days after one of his staffers tested positive for COVID-19, according to his office.

The staffer tested positive Sunday afternoon. Newsom and others among those staffer's contacts have since tested negative.

Newsom’s 10-day quarantine is out of “an abundance of caution,” the statement said. The governor and other staffers were expected to be tested again in the next few days.

Another person in the governor’s office tested positive in October, and Newsom's family was also exposed to an infected person last month. He tested negative after both those cases.