KEY POINTS
  • There are 387 confirmed measles cases this year, according to the Centers for Disease Control and Prevention.
  • This year is shaping up to be the worst year for measles since at least 2014.
  • New York's Rockland County bans unvaccinated children from public places.
Nurse Lydia Fulton prepares to administer the measles, mumps, and rubella (MMR) vaccine as well as a vaccine used to help prevent the diseases of diphtheria, pertussis, tetanus, and polio at Children's Primary Care Clinic in Minneapolis, MN.

Measles continues to spread across the U.S., with outbreaks in four states infecting more people in the first three months of 2019 than in all of last year, according to new data from the Centers for Disease Control and Prevention.

The CDC has confirmed 387 cases across 15 states from Jan. 1 through March 28, compared with 372 cases in all of last year. The health agency updates the statistics weekly. There are now six outbreaks, defined as three or more cases, across four states: New York, Washington, New Jersey and California, according to the CDC.