MIAMI, FL - JUNE 02:  A dose of measles vaccine is seen at the Miami Children's Hospital on June 02, 2014 in Miami, Florida. The Centers for Disease Control and Prevention last week announced that in the United States they are seeing the most measles cases in 20 years as they warned clinicians, parents and others to watch for and get vaccinated against the potentially deadly virus.  (Photo illustration by Joe Raedle/Getty Images)
How personal belief vaccine exemptions cause measles outbreaks
Dozens of unvaccinated children in Washington have become sick with measles after parents opposed to vaccines took advantage of a state law that allowed them to not vaccinate their children.
01:48 - Source: CNN
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MIAMI, FL - JUNE 02:  A dose of measles vaccine is seen at the Miami Children's Hospital on June 02, 2014 in Miami, Florida. The Centers for Disease Control and Prevention last week announced that in the United States they are seeing the most measles cases in 20 years as they warned clinicians, parents and others to watch for and get vaccinated against the potentially deadly virus.  (Photo illustration by Joe Raedle/Getty Images)
How personal belief vaccine exemptions cause measles outbreaks
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