Medieval Diseases Are Making A Comeback: "It's A Public Health Crisis"

https://www.zerohedge.com/news/2019-04-05/medieval-diseases-are-making-comeback-
its-public-health-crisis 
 
And from The Plumber: 
 
The first epidemic of a waterborne disease probably was caused by an 
infected caveman relieving himself in waters upstream of his 
neighbors. 
 
Perhaps the entire clan was decimated, or maybe the panicky survivors 
packed up their gourds and fled from the "evil spirits" inhabiting 
their camp to some other place. 
 
As long as people lived in small groups, isolated from each other, 
such incidents were sporadic. But as civilization progressed, people 
began clustering into cities. They shared communal water, handled 
unwashed food, stepped in excrement from casual discharge or spread as 
manure, used urine for dyes, bleaches, and even as an antiseptic. 
 
As cities became crowded, they also became the nesting places of 
waterborne, insect-borne, and skin-to-skin infectious diseases that 
spurted out unchecked and seemingly at will. Typhus was most common, 
reported Thomas Sydenham, England's first great physician, who lived 
in the 17th century and studied early history. Next came typhoid and 
relapsing fever, plague and other pestilential fever, smallpox and 
dysenteries - the latter a generic class of disease that includes 
what's known as dysentery, as well as cholera. 
 
The ancients had no inkling as to the true cause of their misery. 
People believed divine retribution caused plagues and epidemics, or 
else bad air, or conjunction of the planets and stars, any and all of 
these things. 
 https://www.plumbingsupply.com/pmplague.html