US surpasses 4,000 measles cases with infections confirmed in 45 states: CDC - ABC News - Breaking News, Latest News and Videos

US surpasses 4,000 measles cases with infections confirmed in 45 states: CDC  ABC News - Breaking News, Latest News and VideosAllegheny County measles outbreak expands to two; both patients attend the same school  90.5 WESAThis Penn State Health pediatrician never thought he’d see measles. Now, he treats it every day.  Pittsburgh Post-GazetteMeasles Outbreak in Pennsylvania Is Now the Biggest in U.S. in 35 Years  WSJAmid worst measles outbreak in decades, one clinic leans on years of hard-won trust to keep vulnerable people safe  CNN