Why the Post-Antibiotic World is the Real-Life Version of the Zombie Apocalypse

Photo Credit: Joe Raedle/GettyRight now, humanity is engaged in an epic battle against fast-adapting and merciless predators. No, zombies are not beating down doors to tear chunks of flesh out of the living. Rather, humanity is being hunted by deadly pathogenic bacteria that have gained resistance to antibiotics.

And thanks to the peculiar incentives that drive the pharmaceutical industry, it looks like the cavalry may be a long time in coming.

To understand the current state of the antibiotics market, we have to go back millennia. Humans have co-existed with bacteria throughout our history. They live in our bodies from birth to death. It’s estimated that up to three percent of a typical human’s body mass is made up of symbiotic bacteria, which assist us with bodily functions like digesting food.

Most bacteria in the human body are kept in check by the body’s immune system. But bacteria are constantly evolving to survive and reproduce. Either the immune system successfully adapts to new threats, or the body risks being overrun. Sometimes the immune system will fail to respond to a novel bacterial threat, allowing the bacteria to kill the host.

Before antibiotics were widely available, any accident, injury, or medical procedure that allowed pathogenic bacteria into the body was potentially deadly. One in nine skin infections was fatal. One in three cases of pneumonia led to death. Invasive surgeries including caesarean sections left the patient open to killer infections. Insect bites, burns, and blood transfusions frequently became a source of infection.

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