State health officials say 42 of California's 59 cases are linked to exposure at Disneyland

California state epidemiologist Gil Chavez is calling on anyone who hasn’t had the measles-mumps-rubella (MMR) vaccine to avoid visiting Disneyland’s two California theme parks “for the time being.”

State authorities say at least 59 people across California have been diagnosed with the highly infectious, airborne disease since December.

“Of the confirmed cases, 42 have been linked to an initial exposure in December at Disneyland or Disney California Adventure Park in Anaheim, California,” read a statement released by the California Department of Public Health on Wednesday.

Health officials have also called on any California resident who has not been vaccinated for the disease to consider getting inoculated immediately.

(Time)