Yes a good thing, people who have fully recovered from it can’t infect others.
There’s some suggesting that the R0 might be over 3. Given there were essentially no efforts to contain it up to early March in most countries, the numbers infected could be massive.
Had a long chat (over text) with my mate last night who’s wife is head of infectious diseases at a local major hospital. He said she said the reason so many doctors and nurses are getting infected is because during the intubation procedure when the ventilator tube is being inserted, an aerosol is generated. Everyone performing the procedure or nearby should be wearing a hazmat suit if they want to avoid infection. Then there’s the issue of removing the hazmat suit, or any PPE for that matter, and the risk of infection there as well. Her summary was this is droplet based for the general public, but aerosol based for a lot of health care workers.