How Antivax PACs Helped Shape Midterm Ballots
b'In early 2015, Sen. Ervin Yen, an anaesthesiologist who became Oklahoma\\u2019s first Asian American state legislator, introduced a bill to require all schoolchildren to be vaccinated, unless they had a medical reason not to. California had recently debuted similar legislation after an outbreak of measles in Disneyland sickened 147 people and led to the quarantine of more than 500 others.\\nLearn more about your ad choices. Visit podcastchoices.com/adchoices'