Many NYC vaccine hubs only open four days a week amid low supplies

As of Tuesday, the city had fewer than 42,958 first doses on hand and around 254,000 doses reserved for second shots.

Mayor Bill de Blasio has repeatedly called on the feds and the state to allow the city to dole out its reserve of second doses for those in need of a first shot.

New York State Health Commissioner Dr. Howard Zucker rejected the mayor’s request last week.

The Empire State has been getting about 300,000 doses a week from the feds, 43 percent of which go to the city.