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Unvaccinated People Make Up Large Portion Of Measles Cases In California
capital public radio

Some of the measles cases are linked to international travel. UC Davis infectious disease expert Dr. Dean Blumberg says measles wouldn’t exist in California without that external exposure. But as more people choose not to get vaccinated, vulnerability increases.

“The more people who opt out of immunization, that leaves a larger susceptible pool, and then leads to increased transmission, and then that really is not only a danger to those who are not vaccinated, but also a danger to those who are vaccinated.”