With Measles on the Rise, Here's How to Check If You Were Vaccinated or Have Immunity
Briefly

Measles can spread easily through aerosols, with one infected person potentially infecting nine out of 10 nonimmune individuals.
At least 95 percent vaccination coverage is required to prevent measles from spreading; however, U.S. kindergarteners' coverage has dropped to 93 percent.
Smaller undervaccinated communities within states pose a threat to measles elimination status, even with overall high vaccination coverage.
Read at www.scientificamerican.com
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