Unfortunately, the “sustainable” Chinese farms where people, ducks and other fowl, pigs and fish live in close confinement with each other and eat each other’s feces is the world’s main source for new stains of influenza and some other diseases. Random swapping of viruses has unintended consequences sometimes.
I rest my case.
“In ancient China and Thailand, a single farm might raise multiple species, such as ducks, chickens, pigs and fish while taking advantage of anaerobic (without oxygen) digestion and waste recycling to produce thriving terrestrial husbandry and farming that in turn supported thriving aquaculture farms.”
This is a recipe for generating pathogens.