A used protective face mask rests on the pavement as pedestrians pass, Tuesday, March 17, 2020, in New York. New York state entered a new phase in the coronavirus this week, as New York City closed its public schools, and officials said schools statewide would close by Wednesday. New York joined with Connecticut and New Jersey to close bars, restaurants and movie theaters along with setting limits on social gatherings. Credit: John Minchillo | AP

As of 11 a.m. Tuesday, March 17, 23 Maine residents have been confirmed positive and nine others are presumed positive for the coronavirus, according to the state. Click here for the latest coronavirus news, which the BDN has made free for the public. You can support this mission by purchasing a digital subscription.

New York City residents should be prepared for the possibility of a shelter-in-place order within days, Mayor Bill de Blasio said Tuesday.

De Blasio said no decision had been made yet, but he wants city and state officials to make a decision within 48 hours, given the fast spread of the coronavirus.

“New Yorkers should be prepared right now for the possibility of a shelter in place order,” de Blasio said at a news briefing.

Gov. Andrew Cuomo said earlier Tuesday he had no interest in imposing local quarantines, but he stopped short of ruling it out. Cuomo said that more restrictions on business would come first and that a quarantine would have to be at least statewide.

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Cuomo said Tuesday that citywide quarantines would only encourage people to stay with friends or relatives outside the zone, making transmission problems worse.

Officials in six San Francisco Bay-area counties issued a “shelter-in-place” order that went into effect Tuesday, requiring nearly 7 million residents to stay inside and venture out only for food, medicine or exercise for three weeks.

Watch: What you need to know about handwashing during coronavirus