Jacob Javits Center is officially a 24/7 vaccination site after state officials announced a pilot program to administer its allotment of Johnson & Johnson's one-dose COVID-19 shot there, adding to the list of sites across the city that are offering vaccines round the clock.

Appointments were already booked overnight for the Johnson & Johnson shot, which will only be offered at the massive Manhattan convention center from 9 p.m. to 6 a.m. seven days a week. New Yorkers can also receive the vaccines produced by Moderna and Pfizer at the center during daytime hours though they require two doses administered weeks apart. The Johnson & Johnson vaccine is a single dose that is 85% effective. Any shot a New Yorker wishes to receive requires an appointment. New Yorkers are required to make an appointment to receive the vaccine.

People now eligible to receive a vaccine include those over the age of 65, hospital workers, and anyone with pre-existing conditions including cancer, kidney disease, and pregnancy. People with immunocompromised states such as HIV and obesity also qualify to receive the shot, bringing the current number of eligible New Yorkers to roughly 10 million in the state.

The Johnson & Johnson vaccine arrived to New York City on Thursday, boosting Mayor Bill de Blasio's goal of getting 5 million doses into people's arms by June. The city's hospitals, clinics, and vaccination sites have administered 2 million shots since the vaccine rollout began in mid-December. The city is also set to roll out a vaccination program for homebound New Yorkers.

The same day the Johnson & Johnson arrived to New York City, a vaccination site in Co-Op City in the Bronx opened. On Saturday, officials ushered the opening, with de Blasio recalling speaking to a retired officer named William aware of vaccine hesitancy.

"He had his own questions and hesitation," de Blasio said. "But he said the more he saw, as millions and millions of people got vaccinated, the more confidence he had, and he also wanted to make sure that when the time came it would be one shot only."

Other 24/7 sites that are administering the Johnson & Johnson vaccine include Yankee Stadium, which began administering the shot on Thursday between the hours of 8 p.m. and 7 a.m.

The expansion comes as COVID-19 rates continue to decline across the state and in the city. According to state figures released Saturday, the daily positivity rate in New York on Friday was 2.8%, the lowest since November 21st. There were 78 people who died in New York, including nine in the Bronx, nine in Brooklyn, 11 in Manhattan, and 12 in Queens.

In a statement, Governor Andrew Cuomo called the decrease "significant progress in reducing the spread of COVID while vaccinating residents as quickly as possible."

"Our vaccine distribution network is equipped to handle far more vaccines than the state currently receives, and there's no doubt we'll be able to kick vaccinations into overdrive once the supply increases," Cuomo said. "It's also critical that we continue making the vaccine accessible to all New Yorkers. We're going to get through this pandemic together, but we need everyone to continue taking it seriously and staying vigilant."