NEW YORK - An uptick in coronavirus positivity rates remains a real concern for the city and efforts to inform residents in more than a dozen Brooklyn and Queens neighborhoods continue to be a priority, Mayor Bill de Blasio told reporters Wednesday.

It comes as restaurants in the city begin operating indoor dining at 25 percent capacity.

The mayor said the positivity rate in the city was 0.9 percent Tuesday, down from 3.25 percent the day before. 

The seven-day rolling average is 1.46 percent, up slightly from 1.38 percent.

The city added one more zip code, covering parts of Fresh Meadows and Hillcrest, to the list of zip codes with a 14-day positive test rate over 3 percent.

That's in addition to nine other zip codes announced this week. They include Gravesend/Homecrest, Midwood, Kew Gardens, Kew Gardens Hills/Pomonok, Edgemere/Far Rockaway, Borough Park, Bensonhurst/Mapleton, Gerritsen Beach/Homecrest/Sheepshead Bay and Flatands/Midwood.

The mayor said city health officials are monitoring additional zip codes where positive test results are between 2% and 3%. They include Rego Park, Kensington/Windsor Terrace, Brighton Beach/Manhattan Beach/Sheepshead Bay, Bedford/Stuyvesant (West)/Clinton Hill/Fort Greene, Crown Heights (East), Hillcrest/Jamaica Estates/Jamaica Hills, and East Williamsburg/Williamsburg.

The mayor said almost 1,000 city employees, including 400 NYPD officers, have been deployed to those areas to do outreach, distribute masks and issue summonses to those who fail to comply.

Eleven mobile testing sites are also being setup in areas of concern.

City officials said they are focused on those who have never been tested or haven't been tested in a long time.

"It can help, will help, is helping," De Blasio said of the city's effort to use testing as a way to pinpoint and contain outbreak pockets.

With indoor dining resuming at 25 percent capacity Wednesday, the mayor said the city will be monitoring compliance, which includes temperature checks, tables spaced six-feet apart and contact information collection from diners.

"Where there are instances of non-compliance, a reminder that businesses can be fined or shut down. There will be individual work throughout the community going business-by-business, hopefully finding good conditions. Where there are not good conditions, if they've not been a problem before, there will be a warning. If there has been a problem before, a business can be fined or shut down on the spot," De Blasio said.

The city will also be giving out self-administered tests in places with a lot of foot traffic, like schools, houses of worshsip and grocery stores.