- Pennsylvania surpasses 900 measles cases with 13 new confirmed infections: Officials ABC News – Breaking News, Latest News and Videos
- Pennsylvania Measles Outbreak Grows to Nearly 900 Cases The New York Times
- The tragic death of a Pennsylvania Amish woman stricken by measles post-gazette.com
- America had wiped out measles. Now babies are infected at birth. NBC News
- Pennsylvania measles cases cross 900 as outbreak grows Reuters