that's a good question, and I don't know the answer, I would presume nobody as been denied treatment as that never happened in Lombardy either, you can usually send people to other hospitals, and this has happened in NY too.

But you don't need to reach the level of people being denied treatment to be at an "overwhelming" level, where the hospitals are not operating at peak efficiency.

There have been many reports of hospitals not having masks, gowns and so on, or lacking ventilators or few people able to use them which need to be overworked. Many hospital workers have been infected, and hospitals had to switch to longer shifts.

It's just not business as usual.