The United States Centers for Disease Control and Prevention has recorded 4,410 measles cases so far in 2026, up 330 in a single week. The agency has sent an investigator to Pennsylvania to help contain the country's largest outbreak. CDC figures also show 451 measles hospital stays nationwide this year. Children and teenagers aged five to 19 make up 42% of all cases.
π The Backstory
Pennsylvania has reported 1,222 cases across 42 counties, with 225 people in hospital and five linked deaths. Officials are checking a sixth reported death. Since the outbreak began in late April, staff have given more than 5,900 measles, mumps and rubella vaccine doses at 202 pop-up clinics.
New York's governor declared a disaster emergency on October 5. Vaccination rates among US kindergarteners have fallen since 2019.
π― Why It Matters
Measles spreads very easily and can kill young children. Falling vaccine rates put about 280,000 US kindergarteners at risk of getting sick.
The United States Centers for Disease Control and Prevention has recorded 4,410 measles cases so far in 2026, up 330 in a single week. The agency has sent an investigator to Pennsylvania to help contain the country's largest outbreak. CDC figures also show 451 measles hospital stays nationwide this year. Children and teenagers aged five to 19 make up 42% of all cases.
Pennsylvania has reported 1,222 cases across 42 counties, with 225 people in hospital and five linked deaths. Officials are checking a sixth reported death. Since the outbreak began in late April, staff have given more than 5,900 measles, mumps and rubella vaccine doses at 202 pop-up clinics.
New York's governor declared a disaster emergency on October 5. Vaccination rates among US kindergarteners have fallen since 2019.
Measles spreads very easily and can kill young children. Falling vaccine rates put about 280,000 US kindergarteners at risk of getting sick.