The number of confirmed cases of measles linked to Disneyland or Disney California Adventure Park has risen to 17, according to state public health officials.
On Wednesday, health officials revealed that nine people who visited one of the popular Anaheim theme parks in December had contracted the disease.
All of the confirmed cases were individuals who went to one of the parks between Dec. 15 and Dec. 20, according to a news release from the California Department of Public Health.
“It is likely that a person infectious with measles was at one of the theme parks on these dates. People can be infectious with measles for nine days,” the state’s news release said. “Several large contact investigations are ongoing.”
Seven of the confirmed cases were reported in California — in Alameda, Orange, Pasadena, Riverside, San Bernardino, San Diego and Los Angeles County.
The other three cases included two in Utah and one in Colorado.
More information about the measles virus and vaccine is at the state Department of Public Health’s website.