How do you get new deadly diseases? One way is from other species. SARS (from hens' avian flu), Swine flu & now Coronavirus.
How do you increase the risk? By cramping together animals in small cages in filthy conditions.
How to increase risk even more? Pump these animals with antibiotics, allowing the microbes to mutate to gain resistance, becoming super-bugs, rendering the antibiotics (discovered after great efforts) useless.
Once the body is dead, with no immune system, the body becomes a playground for microbes. Like the case of a girl who picked up a dead bird & got infected by a variant of the black plague. Cremating dead bodies quickly will reduce risk, as the Chinese govt is doing now to some Coronavirus victims.
How to increase risk even more? As the permafrost melts with a warming planet, ancient microbes are released. Anthrax cases were reported in the Tundra, the infections caused by once frozen animal bodies decomposing.
Maybe the next big threat for humans is from the microbes, rather than humans themselves.
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