- Pennsylvania’s measles crisis: Inside the nation’s largest outbreak Pittsburgh Post-Gazette
- Pennsylvania infant’s death confirmed to have been caused by measles The Hill
- 6-week-old infant died of measles, Pennsylvania county coroner says CNN
- The behind-the-scenes effort to contain the nation’s worst ongoing measles outbreak The Washington Post
- Measles cases top 3,000 to reach highest level in three decades, CDC reports NBC News