LOS ANGELES — Counties across California will begin stricter COVID-19 restrictions on Monday as cases surge statewide and Thanksgiving travelers return home.

Health officials are preparing for a wave of cases in the next two or three weeks that could be tied to holiday gatherings.

Los Angeles County will impose a lockdown calling for its 10 million residents to stay home beginning Monday.

Santa Clara County is banning all high school, collegiate and professional sports and imposing a quarantine for those traveling into the region from more than 150 miles away.

San Francisco and San Mateo counties moved to the most restrictive purple tier in the state’s pandemic blueprint for the economy.

The state reported 7,415 coronavirus hospitalizations on Sunday, citing the most recently available data from the previous day. More than 1,700 of those patients were in intensive care units. California’s previous record was 7,170 in July.

As of Sunday, California has had nearly 1.2 million confirmed coronavirus cases and more than 19,000 deaths since the pandemic began. The state reported around 15,600 new cases on Saturday.