EXECUTIVE SUMMARY
Pennsylvania's measles outbreak exceeds 1,000 cases with five deaths reported, prompting nationwide health warnings and vaccination urgency.
A CDC Epi-Aid is a rapid, short-term field investigation from the federal health agency of an "urgent public health problem." The Epi-Aid provides resources such as, but not limited to, increasing the workforce available for rapid response and building epidemiologic capacity, according to the CDC.
Meanwhile, measles cases in the U.S. have surpassed 3,800 so far in 2026, with cases confirmed in 45 states and Washington, D.C., according to the latest data from the CDC.