Measles cases have reached a 33-year high with breakouts across 39 states. Critics have called on HHS Sec. Robert F. Kennedy, ...

Sen. Ron Johnson’s hearing titled “Voices of the Vaccine Injured,” was filled with anti-vax conspiracies and misinformation.

Ken Dilanian and Brandy Zadrozny join Chris Hayes to discuss the backlash the Trump administration is facing about the ...

Sen. Ron Johnson’s hearing was a dangerous beachhead from which the movement stands to make unprecedented inroads into public health policy.