At least 13 people in the US have died of measles, a new outbreak in California that began Tuesday and has infected more than 1,100 people.
The Centers for Disease Control and Prevention has said it has not seen a case of measles in California in more than a month.
State officials say California’s death toll is likely to grow, and a new strain of measles has been discovered in the state.
More than 2,500 people have been vaccinated, and nearly 2,000 have recovered.
More on the deadly measles outbreaks:The state of California has not reported any confirmed cases.
The Centers for Diseases Control and Infectious Diseases says California is the epicenter of the outbreak, with outbreaks occurring in Southern California, Northern California and the San Francisco Bay Area.
California has not experienced any measles outbreaks since the virus was first identified in Disneyland in December, the agency said.
The virus is spread through direct contact with infected people, such as sneezing, coughing or sneezes, which usually are accompanied by a fever of 100 or higher.
The state has been working to prevent measles and other diseases by vaccinating at least 5 million people since March.