There are TED.com videos on viruses that explain how deadly viruses can mutate to be relatively benign. If the virus kills its host it can not spread. If herd immunity slows it up, evolution will favour it as benign. Nice theory, but it takes years. A recent Royal institution YouTub vid showed the progress of Spanish 'flu. It reached its peak before Nov 11 1918. And sorry US, but Kansas was mentioned as ground zero for the epidemic. Most countries called it by the name of another country except Japan where patent zero was a Sumo wrestler so it was called the Sumo 'flu. See graphs & humour COVID-19, only London is shown for Feb/Mar 1919 (3rd wave). (Sir) Peter Poit, head of the Uni college London School of Health & Tropical Medicine 2018 . & . the Q&A after is much shorter . & . Peter Poit on COVID-19. First is looooooooong, the other two are 15 mins & 22 mins.
|