Tri-State Area officials have repeatedly said testing and tracing will be key to reopening the economy in wake of the coronavirus pandemic.

New York City is now expanding those efforts with 12 new testing sites and hundreds of contact tracers currently undergoing training.

Mayor Bill de Blasio said the city’s public hospitals and clinics average 5,100 tests a day across 23 sites.

He plans to launch 12 new sites over the next three weeks, more than doubling that capacity to 10,700 a day.

The mayor also said the city has received 7,000 applications for its contact tracing “army.” The first 535 are now taking a remote training course through Johns Hopkins University.

People with public health backgrounds are encouraged to apply online at nyc.gov/traceteam.

De Blasio said the goal is to have 2,500 contact tracers in play by early June.

CORONAVIRUS: NY Health Dept. | NY Call 1-(888)-364-3065 | NYC Health Dept. | NYC Call 311, Text COVID to 692692 | NJ COVID-19 Info Hub | NJ Call 1-(800)-222-1222 or 211, Text NJCOVID to 898211 | CT Health Dept. | CT Call 211 | Centers for Disease Control and Prevention

On the state level, Gov. Andrew Cuomo has said there will be 30 contact tracers for every 100,000 individuals. They will start with department of health employees and other government employees not currently working, then hire thousands of helpers.

In New Jersey, Gov. Phil Murphy said the state will likely need “at least 1,000 dedicated contact tracers to complement the hundreds.”

So how do you raise an army that quickly?

“We’re beginning to see a number of tools come online which are very much needed,” said David Harvey, executive director of the National Coalition of STD Directors.

Johns Hopkins partnered with Bloomberg Philanthropies to create the five-hour training program.

“It will cover all the basic information of epidemics, contact tracing and privacy. There’s also a test at the end of the training which you have to pass in order to be hired,” former Mayor Michael Bloomberg said in a press conference with Cuomo.

“It allows a city or a state to respond to new cases, to shut down chains of transmission, to block the virus from moving,” said Dr. Joshua Sharfstein with Johns Hopkins Bloomberg School of Public Health.

Click here to take the training course for free.

Google and Apple have also jumped in, the arch-rivals actually teaming up to create operating systems for contact tracing.

The idea is to use your phone’s Bluetooth to track people who may have come in close proximity with a patient. They, in turn, would get an alert on their phones, perhaps warning about self-quarantining.