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5 Strange Diseases Making a Comeback Thanks to Humanity's Stupidity

Climate change is expanding the geographic reach of some diseases. Others, once eradicated, have returned due to indiscriminate antibiotic use.


In 2012, none of America's top killers are contagious. You don't get cancer, diabetes, or heart disease at the swimming pool or just because someone sneezed on you. But a hundred years ago, you probably  died from something you caught. While hygiene and modern medicine have thankfully eliminated the deadliest of those bugs, there's still plenty of parasites, bacteria, and viruses hoping to reproduce in the warm, cozy environment of your body. Like it or not, we and these microbes are intimately intertwined.

Climate change is expanding the geographic reach of some diseases, possibly including  hantavirusbrain eating amoebas, and at least  seven others. Others, once eradicated, have returned due to indiscriminate antibiotic use. And still other diseases have remained a mystery, continuing to frustrate doctors and patients. Below, we've rounded up the best long-form journalism on disease, ready for your consumption. Apologies in advance, hypochondriacs.

Sex and the Superbug (Gonorrhea) | Jerome Groopman |  The New Yorker | October 2012

Are blow jobs responsible for drug-resistant gonorrhea? Related question: Does anyone use condoms during oral sex? Our combined lax attitudes toward antibiotics use and oral sex have spawned a strain of gonorrhea resistant to every known antibiotic. Luckily, there is a cheap, easy solution—if only we'll use it.

Condoms, long dismissed as unnecessary for birth control and suboptimal for pleasure, ultimately returned as a proven way to stem the spread of H.I.V. The challenge now facing the public-health community is how to persuade people to rethink an insidious disease—and, to a great extent, a sexual practice—that has come to be viewed as trivial. As the distinction between safe sex and safer sex becomes ever less meaningful, the responsibility to be vigilant grows more personal, and more urgent.

How Your Cat Is Making You Crazy(Toxoplasmosis) | Kathleen McAuliffe |  The Atlantic | March 2012

A parasite from cat litter crawls into your brain, making you more daring or extroverted or keen on wearing rumpled clothes. This may sound far fetched, especially when it comes from an eccentric Czech scientist, but the science is compelling. Many microbes, not just  Toxo, can alter our minds as well as our bodies.

"Is it possible cat urine may be an aphrodisiac for infected men?," I ask. "Yes. It’s possible. Why not?" says Flegr. I think he’s smiling at the other end of the phone line, but I’m not sure, which leaves me wondering whether I’ve stumbled onto a topic ripe for a  Saturday Night Live skit, or a matter worthy of medical concern.

The Patient Predator (Tuberculosis)| Kevin Patterson |  Mother Jones | March/April 2003

Tuberculosis usually invokes consumptive 19th century poets—or, at worst, a problem for countries lacking modern medicine. But with the disease largely eradicated in the First World, surveillance has grown lax, antibiotic resistance has shot up, and globalization has given the bacteria millions of lungs to hitch a ride. Doctor Kevin Patterson begins his story with patients in the Hudson Bay, a TB hotspot that could become the spoke of a new epidemic.

The creature arrived in the arctic as it had spread itself around the world. It lay dormant in the lungs of someone apparently healthy enough to undertake such a journey, and then, when he was weakened, perhaps by hunger, or cold, or simple loneliness, it revived itself explosively. The sailor, or the missionary, or the trader found himself coughing paroxysmally and febrile, in some little iglu or tent, the bacterium streaming through his blood, to all his organs, and then a local Inuk had the misfortune to enter the shelter and leave. In Arviat, one of the Inuit communities that hug the shore of Hudson Bay, lives a woman I will call Therese Oopik, who carries the descendants of the creature within her.

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