A sign reminds people to wear face masks at an empty Grand Central Market in November in Los Angeles, California. Los Angeles has urged citizens to stay home since early December to slow its outbreak. Stay-home orders can help control a coronavirus surge.

A sign reminds people to wear face masks at an empty Grand Central Market on November 30, 2020 in Los Angeles, California – Los Angeles County’s new stay-at-home restrictions took effect on November 30, 2020, one day after the county reported more than 5,000 new COVID-19 cases. (Photo by Frederic J. BROWN / AFP) (Photo by FREDERIC J. BROWN/AFP via Getty Images)