On 2020-04-01 8:02 a.m., Ed Pawlowski wrote:

> But even in 1918 we did not know about viruses and it was thought the
> Flu was bacterial.
>
> Two good documentaries on PBS last night, one about 1918, the other
> about polio.Â* It was Salk vs Sabin.Â* Salk was first but Sabin was better
> but a few years later.Â* There was also a bad batch of Salk that gave
> people polio.
>
> We've had a pretty good ride for years.Â* We forgot that things like
> Covid-19 can still happen in spite of science and medical advances.

and that viruses and bacteria evolve, even in places where the Theory is
not taught.