[Right_in_Virginia]

Spanish Flu died naturally due to herd immunity and because.....that’s what viruses do.....die.

The Spanish Flu didn't die, it weakened and mutated.

"What’s even more remarkable about the 1918 flu, say infectious disease experts, is that it never really went away. After infecting an estimated 500 million people worldwide in 1918 and 1919 (a third of the global population), the H1N1 strain that caused the Spanish flu receded into the background and stuck around as the regular seasonal flu.

"But every so often, direct descendants of the 1918 flu combined with bird flu or swine flu to create powerful new pandemic strains, which is exactly what happened in 1957, 1968 and 2009. Those later flu outbreaks, all created in part by the 1918 virus, claimed millions of additional lives, earning the 1918 flu the odious title of “the mother of all pandemics.”

https://www.history.com/news/1918-flu-pandemic-never-ended

[mac_truck]

I was surprised at how recently the research into the Spanish Flu genome was conducted...late 1990s iirc. A big take away for me was the fact they found the virus had been circulating in the human population for years before it mutated into its most virulent/transmissible form.

[Jane Long]

Weakened, variate, mutate....it’s what viruses do.

It’s how they “die” out, from their original virility and lethality.

Thanks for the very detailed description.