A few days ago, we wrote about the U.S. whooping cough outbreak -- which is the worst in 50 years.
Pertussis can prove deadly to infants and toddlers, but healthy adults aren't likely to succumb to this illness. (However, it's still a good idea to get a booster shot! Details here.)
Whooping cough cases have outright ballooned in Washington; state health authorities actually declared epidemic status earlier this year, there has been a 13-fold increase in diagnoses since 2011.
Washington -- though home to a lot of highly-educated, tech savvy people -- is also the epicenter of the U.S. anti-vaccination movement. Over the last few decades, more and more parents there have opted out of inoculating their kids against preventable illnesses. As some 90 percent of any population must be inoculated for vaccines to work -- AKA "herd immunity" -- many are blaming Washington's anti-vax camp for spurring the disease's spread.
Of course, this brings up some questions: What the hell is the anti-vax movement, anyway? Where does it come from and, perhaps most importantly, why don't people want to protect their kids?
To answer your queries, we've prepped a brief history...
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