Kennedy Clashes With Shapiro Over Measles Deaths After Posting Misinformation

Pennsylvania authorities reported the deaths in mid-August 2026, both in individuals without MMR vaccination. Kennedy offered CDC support during the call but faced criticism for prior statements questioning vaccine safety and efficacy. Shapiro publicly accused the administration of contributing to declining uptake through mixed signals on the MMR shot.

CDC data through 2025 show two-dose MMR effectiveness at 97 percent against measles infection. State exemption rates have risen 1.8 percentage points since 2023, correlating with clusters in communities below 92 percent coverage. Historical outbreaks in under-vaccinated groups demonstrate attack rates exceeding 90 percent upon introduction.

Kennedy’s amplification of claims from The HighWire and deflection to prior administrations mirrors patterns seen after 2019 Samoa and 2024 Ohio outbreaks, where mixed official messaging preceded coverage drops of 3–5 percent. Senate Republicans including Bill Cassidy have issued separate calls for vaccination, revealing internal party divergence.

Ongoing CDC review of the Pennsylvania cases will include contact tracing and exemption mapping. Next data release expected within 30 days; sustained coverage below 93 percent in affected counties would trigger additional outbreak modeling by state epidemiologists.