“Since Paratyphoid fever only killed about 1% of those infected...”
1% of Europeans with modern medical care.
Now adjust for no resistance and no medical care.
“Now adjust for no resistance and no medical care.”
Maybe a 10% death rate. Medical care in America and Europe was not great before public sanitation and antibiotics. The Aztecs did have herbal meds and antiseptics, surgery etc. They weren’t as primitive as Native Americans.
Bingo! Collectively, we have forgotten how dangerous a lot of injuries and sicknesses are without modern medical care. Before antibiotics or even sulfa drugs, a lot of our more common diseases, pneumonia, would kill even young healthy people. There was a guy who had a website called WSHTF. It detailed his experiences and lessons learned while he survived the break-up of Yugoslavia. He was an EMT prior to the civil war. He mentioned numerous times how many people died of infection because they did not have access to common antibiotic creams like bacitracin.