Not necessarily a problem with food shortage - this is primarily a problem of one type: clean, fresh water
You can have all kinds of food and still get cholera! Plus I think there’s about another half dozen relatively common bugs that can dry you up like a raisin toot sweet! IIRC, amoebic dysentery is another baddie.
E. Coli is the general culprit for Montezumas revenge, but it is a pretty benign form. But the kind that kills folks, I think we are back again to talking about diarrhea, high temps and fever like conditions, possible blood in the stool.
Nasty chit!! So it pays to have a few tricks up your sleave!
Amen to that. Loss of power could result in people drinking risky water without even boiling it.