- More Than 100 Cases of Measles Reported in Utah and Arizona The New York Times
- Measles Outbreaks Across the US Spread As Vaccination Rates Fall Bloomberg.com
- Measles spreading beyond the center of the Utah-Arizona outbreak NBC News
- How Prepared Is Northern Michigan For A Measles Outbreak? The Ticker
- Measles outbreak at Arizona-Utah border grows, forces multiple hospitalizations azcentral.com and The Arizona Republic

