In 1918 the young and strong got sick in the morning and died by night
Their own strong immune system killed them
Cytokine storm
https://www.livescience.com/35867-flu-triggers-deadly-immune-system-storm.html
correct. My great grandmother got up on a Monday, sent the kids off to school and was dead by 2pm, sitting up in a chair.
You can take a lot of natural things to help reduce the cytokine storm and associated out of control inflammation.
Avoiding dehydration is also important.
We had some good discussion threads about the 1918 Flu and the impact of the cytokine storm response. It turns out that we have no response to a badly mutated Avian flu like the 1918 flu available.
This article indicates the first hope I’ve seen that some sort of response in possible. A 1918 Spanish Influenza (Avian) event is beyond most people’s understanding in its impact. They think of a bad version of regular influenza and don’t understand that it is that to the fifth power.