Where measles is spreading in Pennsylvania

At least 943 measles cases have been reported in Pennsylvania this year. Lancaster County has the most: 381. Statewide, 176 people have been hospitalized and 5 have died.

A map of Pennsylvania's 67 counties shaded by the number of measles cases reported this year. 39 counties have reported at least one case, out of 943 cases statewide.

(Please use a modern browser to see the interactive version of this visualization)

Data current as of Sept. 30, 2026.

Source: Pennsylvania Department of HealthGraphic: Matt Stiles, CNN