4 ms·
Which variants survive in the wild is natural selection. Too deadly and it kills the host before spreading. The viruses that spread the most are the ones leas
by Mikeb85 5y ago
Which variants survive in the wild is natural selection. Too deadly and it kills the host before spreading. The viruses that spread the most are the ones least noticed.
Example: common cold viruses. They're essentially always there and only make you sick when your immune system weakens a bit, and goes away quickly as well.