measles pennsylvania

What happened? AI explains

The "Pennsylvania measles outbreak" is trending due to two recent deaths in Lancaster County, marking the first measles fatalities in Pennsylvania in 35 years and likely the first in the U.S. this year. As of Monday, Pennsylvania has confirmed nearly 400 cases of measles this year, with almost half of those in Lancaster County, making it the state with the third-highest number of cases in the U.S. during a larger nationwide outbreak that has infected over 2,700 people.