Grant Colfax provided a vague answer, he did hint that the stay-at-home order could continue for weeks.

"Our numbers are still going up, and it usually takes a couple weeks for those numbers to start going down once they level off," Colfax said.

A county can choose to be more restrictive than the state's regional stay-at-home order, and San Francisco was among several Bay Area counties that adopted the order preemptively on Dec.

As cases rise, hospitalizations are increasing, and as of Tuesday, there were 249 COVID-19 patients hospitalized in S.F., compared with 114 at the height of the summer surge in July, Colfax said.

The city has been focused on vaccinating health care workers and residents of skilled nursing facilities, and this week the San Francisco Health Network will begin to vaccinate people age 65 and older at its 14 locations that provide primary care, including Zuckerberg San Francisco General Hospital and Laguna Honda Hospital.

More than 14,000 people that are 65 or older are served by the San Francisco Health Network.

The network provides health care regardless of immigration status or lack of insurance.