Mayor Bill de Blasio told New Yorkers late Friday that anyone who feels flu-like symptoms coming on should stay home.

“If you get a cough or sore throat, assume it’s’ something,” de Blasio advised. “If you do haev symptoms, stay home. Don’t go to work. Don’t go to school. Don’t go to a restaurant. Don’t go to the theater,” he said.

Hizzoner’s advice comes as five infected patients are being treated in the Big Apple for the novel coronavirus.

Nearly 2,800 New Yorkers remain in “home isolation” over concerns that they may have been exposed to the deadly virus — and as the city’s Health Department dramatically ramps up testing in an effort to check and clear them.

However, de Blasio added he saw no need yet to use his emergency powers to impose curbs on travel, work and social gatherings as fears mount about the coronavirus’s ability to spread locally.

“Community spread means a greater ease in which this disease can be spread because it’s in so many places,” de Blasio said at a much-delayed late Friday news conference at the city’s Office of Emergency Management facilities in Brooklyn.

“This is not yet invoking emergency powers and I hope we don’t get to that,” he added.

The number infected in the city remains low even though the Health Department can now run hundreds of tests per day, de Blasio said during the press conference, citing this as a measure of the city’s success in keeping the disease in check so far.

Efforts to keep coronavirus in check have even reached the staff at City Hall.

A top de Blasio aide, Avi Fink, was tested and cleared after his father came down with the virus.

Just to New York’s north, in Westchester, 34 people have positive for COVID-19 — and another 1,000 are in mandatory or voluntary quarantines due to potential exposure.

Many of the cases are linked to a single lawyer, whom sources have identified as New Rochelle resident Lawrence Garbuz.

All told, officials have tallied 44 positive tests across the Empire State, of which 37 have been traced back to Garbuz.