From January 1 to August 22, 2019, 1,215** individual cases of measles have been confirmed in 30 states. This is an increase of 12 cases from the previous week. This is the greatest number of cases reported in the U.S. since 1992 and since measles was declared eliminated in 2000.
- Measles can cause serious complications. As of August 22, 2019, 125 of the people who got measles this year were hospitalized, and 65 reported having complications, including pneumonia and encephalitis.
- The majority of cases are among people who were not vaccinated against measles.
- More than 75% of the cases this year are linked to outbreaks in New York and New York City. Measles is more likely to spread and cause outbreaks in U.S. communities where groups of people are unvaccinated.
- All measles cases this year have been caused by measles wild-type D8 or B3.