Tornado Alley (PROG)

[brooklyn13]

Link, please, because that's flat out a lie.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4504358/

There weren't really vaccines to fight it:

https://www.clinicaloncology.com/COVID-19/Article/07-20/Vaccine-Efforts-In-the-1918-Flu-Pandemic/58837

Note:
"What did the public health and medical communities do to fight this onslaught of cases? Some cities quickly adopted various public health measures: mandatory isolation of the sick and their contacts, school closures, and bans on public gatherings."