Rate of mutations is directly proportional to number of viruses out there. We're having exponential growth in the amount of COVID19 (with a slow exponent, with

Rate of mutations is directly proportional to number of viruses out there. We're having exponential growth in the amount of COVID19 (with a slow exponent, with social distancing, but exponential none-the-less). That we've seen mutations back when there was a tiny fraction of the cases we have today is a very bad sign. If it jumps species, as we saw with mink, we may have a reservoir in nature with no control. It will mutate and periodically jump back to humans.