4 ms·
Viruses always weaken over time. If they kill their host too quickly, they don't spread.
by marklubi 5y ago
Viruses always weaken over time. If they kill their host too quickly, they don't spread.
- matthewmacleod 5y agoThis is a rule-of-thumb guide to selection pressure, rather than some kind of underlying biological fact. We can trivially observe many disease-causing agents to which this doesn’t apply. And yersinia pestis is not a virus.