With dozens of measles cases popping up in the United States, Americans are buzzing about vaccines once more -- and some old fearful myths are resurfacing. These myths may be keeping parents from protecting their children from dangerous diseases, when there's every reason to get them vaccinated. Vaccines prevents six million deaths worldwide every year, CNN's Dr. Sanjay Gupta writes. And there's basically no reason not to get them. Only one in a million children has a serious adverse reaction. Those are great odds. You're 100 times more likely to get struck by lightning than have an allergic reaction to a vaccine, Gupta says. Taking aspirin, for example, is much more likely to cause brain bleeding. Still, five nail-biting notions continue to scare away people from the protection they need. 1. THEY CAUSE AUTISM The fear: This is the big one.
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