The CDC reported 4,588 measles cases in the U.S. as of October 22, an increase of 178 cases in one week. Measles-related hospitalizations have reached 479 this year. Children and teenagers ages 5–19 account for the largest share of reported infections, with 1,914 cases (42%), followed by adults ages 20 and older, with 1,881 cases (41%). The continued increase in cases highlights the ongoing spread of this highly contagious disease.
Resource: US CDC says measles cases rise to 4,588 as outbreak continues