[AFB-XYZ]

t’s a cold virus. They mutate, which has why there has never been a cold (coronavirus) vaccine. No big deal.

But livius! It's "ripping!" :-)

[gas_dr]

Of course the first law of mutation is more virulent but less severe in generational succession. It’s why it tends to be selected because it lives to get the next host without killing the original host.

It is amazing that basic biology is no longer understood