Maybe yes, maybe no. Measles cases have been on a long-term upward trend in the US since the bottom around 2000: https://ourworldindata.org/grapher/number-of-me

Maybe yes, maybe no. Measles cases have been on a long-term upward trend in the US since the bottom around 2000: https://ourworldindata.org/grapher/number-of-measles-cases?time=2000..latest https://ourworldindata.org/grapher/number-of-measles-cases?t... In Canada, measles cases suddenly exploded in 2025 as well, and they don't have RFK Jr. there: https://health-infobase.canada.ca/measles-rubella/ https://health-infobase.canada.ca/measles-rubella/ The policies around measles vaccines have shifted a little since RFK became HHS Secretary, but not in a material way. Generally the messaging has focused on putting measles, mumps, and rubella in individual vaccines rather than combined, but at no point has the federal government recommended not to get vaccinated. That, combined with the Canadian data, implies that RFK or other changes to US health policy are not likely to be the cause of the measles outbreaks.