If you read the article carefully and look at the pictures, they had issues. One picture shows a doctor wearing plastic shopping bags over their shoes.
Also, the previous staff did get ill, partly because of changing in the dark in a small room. The current staff fixed the lighting and added mirrors.
Contamination from dressing and undressing scrubs was also a problem in Toronto hospitals with SARS-1.
1. They had enough PPE (quite possible - the first place hit should have plenty available)
2. No staff caught the virus (this seems unlikely - even with perfect protection at work, some should have caught it at home?)