SACRAMENTO, Calif. — California’s governor says the state is showing signs of a potential new surge of coronavirus cases.

Gov. Gavin Newsom said Monday that could prompt another shutdown of businesses and further delay school reopenings.

A business industry expert says a slow-down of business reopenings could not come at a worse time, especially for retailers who depend on the holiday shopping season for a majority of their annual sales.

Rex Hime, president and CEO of the California Business Properties Association, which is a group representing owners of commercial properties, said the consequences of a third shutdown “will be devastating.”

Newsom said his message to the business community and parents of school-aged children is to “abide by these mask mandates.”

Newsom also received a flu shot during his news conference on Monday, and urged others to do the same.