A Pennsylvania coroner has officially confirmed that measles caused the death of Mary Stoltzfus, a 6-week-old infant who died on Aug. 18. Born with Amish lethal microcephaly — a rare genetic condition that leaves children with little immune defense — she was far too young to be vaccinated, as the first measles dose is typically given around age 1. A second infant, Ivan Miller, died Aug. 14 of a ruptured spleen; measles is listed as a contributing condition on his death certificate, though the coroner clarified the virus did not cause the spleen injury.

Despite the coroner sharing his findings with the CDC, the agency's measles tracking page still does not reflect either death — raising alarm among public health leaders about the reliability of federal data. The omission has fueled a political dispute between Pennsylvania's governor, who called for vaccination, and Health Secretary RFK Jr., who initially suggested the deaths "may have been fabricated." Kennedy later acknowledged the coroner's measles finding in a social media post.

By the Numbers:

• 620+ measles cases recorded in Pennsylvania in 2026
• 37 counties affected across the state
• 95% vaccination coverage needed to prevent outbreaks — the U.S. has fallen below this threshold
• November 2026: date international officials will meet to assess whether the U.S. has lost its measles-free status

Why it matters: When federal health agencies delay or omit confirmed death data, it erodes public trust and hampers outbreak response — at exactly the moment the U.S. may be on the verge of losing its decades-long measles-free designation.