Soldiers receiving the vaccinations became sick with Spanish Flu. Fort Riley was the test group for the experimental vaccinations. Fort Riley is where the Spanish Flu started on March 4 (https://en.m.wikipedia.org/wiki/Camp_Funston)
Jan_Sobieski wrote: “Soldiers receiving the vaccinations became sick with Spanish Flu. Fort Riley was the test group for the experimental vaccinations. Fort Riley is where the Spanish Flu started on March 4”
It has not been conclusively established that the Spanish Flu began at Fort Riley. It could have started in China. It could have been brought to Fort Riley by a soldier.
Second, millions who died from the Spanish Flu never came near Fort Riley or received this vaccination.
Third, there were multiple attempts to attribute the Spanish Flu to a bacteria. All failed miserably.
Seriously, you should read:
The Great Influenza: The Story of the Deadliest by John Barry.
or
Pale Rider: The Spanish Flu of 1918 and How It Changed the World by Laura Spinney.
As I stated earlier, there is no doubt that many who died during this pandemic died from Pneumonia. However, the pneumonia was an opportunistic infection that took advantage of the damage caused by the H1N1 virus.