If you visit most middle sized cities’ general cemetery you will see places where there are no headstones. It appears to be a green space in the middle of the cemetery.
Those are mass graves.
People today have NO concept of what that would look like. Consider that where there were 50,000 people in 1918, there are probably 150,000 today. And a City like NY where everyone uses mass transport...they would be filling up barges and dumping them at sea.
When we were doing a lot of research for related threads back in 2002 when I think this was a hot topic, we were digging medical journals and the like. The CDC and immunologists in general know the unbelievable impact this would have on a modern healthy population. Most people entirely misunderstand the risk evaluation. The think of antibiotics and modern medicine in general being so advanced compared to 1918 that they simply discount the risk.
At that time was the first reference to the cytokine blast effect and posters thought we were making it up because no one had ever heard the term.