How is no one keeping track of this??
It would need to be tracked from one of two sources: OBs and Chevra Kadisha.
I don't think there's unification amongst OBs here; remember they're competitors.
Chevra Kadisha has stillborn numbers but 1) have no way to link to covid and 2) is extremely private and sensitive work so they probably won't give out these stats unless needed ltoeles harabim (which would probably need to be initiated by rabbonim).