Governor Andrew Cuomo announced people with underlying conditions would be eligible for the vaccine along with those 65 and up in mid-January, facing criticism his administration was lagging on doling out the shots. But then, supplies started to dry up and no further guidelines were announced.

Now, 4 million New Yorkers with a spectrum of underlying conditions sit in limbo. Their fate depends on scientists trying to decipher which conditions present the most danger amid a constantly evolving pandemic—and state regulators with wide-ranging appetites for following such evidence.

For the full story, head to Gothamist.