Originally Posted by
wco81
There must be some number of recovered who have immunity?
It's a small percentage of those infected but it has to grow and eventually grow faster than new infections eventually.
Or else it's really grim.
Yes, but they did get infected in order to get immunity... and then had the opportunity to spread it to others and/or consume limited medical resources.
The “no immunity” refers to other diseases like flu where not everyone will get it if exposed due to immunity e.g. from flu shots.