WIRED ScienceIn early 2015, Sen. Ervin Yen, an anaesthesiologist who became Oklahoma’s 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.
