https://pubmed.ncbi.nlm.nih.gov/33588571/
"The Spanish Flu was one of the disasters in the history of Iran, especially Southern Iran, which led to the death of a significant number of people in Iran. It started on October 29, 1917, and lasted till 1920 - a disaster that we can claim changed the history. In one of the First World War battlefields in southern Iran in 1918..."
This researcher thinks it was here, in Haskel County KS (sw of Dodge City,) and from there, to Ft Riley KS and the European trenches.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC340389
(My thought is that it could also have been the pneumonic form of bubonic plague in Haskel co and not flu. (Prairie Dogs and Ferrets are carriers.)
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