It’s been exactly 100 years this summer that New York City experienced its first outbreak of polio. Earlier this summer, U.S. health officials made the announcement that the first cases of Zika virus, which can occur as the result of a mosquito bite from an infected insect, had been verified in the continental United States. The American public’s current uncertainty of Zika, and its learning more about the virus and its causes, interestingly mirrors people’s perception of polio a century ago.

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