>Every cold and flu grow exponentially. No, that's true only if it's brand new. Immunity for a certain strain lasts several years, which means there's a level

>Every cold and flu grow exponentially. No, that's true only if it's brand new. Immunity for a certain strain lasts several years, which means there's a level of herd immunity that constraints infection from even reaching some of the non-immune folks, hence it's hard for it to be exponential. This is not the case with the 'novel' coronavirus. There is no large scale immunity among the population.