An antibody survey of more than 15,000 New Yorkers found the coronavirus predominantly in New York City residents, Gov. Andrew Cuomo on Saturday said.

Upstate regions made up single-digit percentages of the weighted share of the statewide survey, with Western New York recording the highest at 6 percent.

New York City, meanwhile, made up 19.9 percent of the overall antibody cases. Overall, 12.3 percent of people surveyed tested positive for having antibodies — meaning they have had the virus and resolved it.

The survey’s results could lend support for reopening regions of the state in the coming week north of the New York City area.

But there are caveats: People tested are those who are going to public places like grocery stores in the middle of the day, suggesting they are not essential workers or people who are staying home all the time.

Testing will need to ramp up dramatically in order to begin any jump starting of the economy. Coronavirus hospitalizations continued to fall in the state, as have intubations. The daily death toll from the virus ticked up slightly to 299 people in the last 24 hours.

Cuomo in recent days has set up plans to reopen up the state’s economy on a gradual basis, most likely starting in areas of upstate New York that were not as hard hit by the pandemic. Criteria for reopening won’t just be based on the virus’s spread over the last six weeks, but also available hospital capacity being below 70 percent.

Businesses defined as “essential” will be gradually expanded, most likely focusing on companies that can maintain social distancing and cleaning policies to keep workers safe.

To get a better idea of who is still contracting the virus, Cuomo wants hospitals to record more information on new COVID patients, including where they work and whether they have contracted the virus at home or while at work.