LOS ANGELES — A measles outbreak traced to Disney theme parks in California led to warnings against visiting the happiest place on Earth if tourists or their children have not been vaccinated against the highly contagious respiratory disease, which has sickened 70 people.
New infections linked to the theme parks emerged Wednesday in the outbreak that has spread to five states and Mexico, though the vast majority — 62 — occurred in California.
People who have not received the measles-mumps-rubella, or MMR, vaccine are susceptible to contracting the highly contagious illness and should avoid Disney ‘‘for the time being,’’ state epidemiologist Gil Chavez said.
The same holds true for crowded places with a high concentration of international travelers, such as airports, Chavez said.
People who are vaccinated do not need to take such precautions, he said.
Disneyland Resorts spokeswoman Suzi Brown said officials agreed with the advice that ‘‘it’s absolutely safe to visit if you’re vaccinated.’’
The people who have been infected range in age from 7 months to 70 years old. The vast majority had not been vaccinated, and a quarter had to be hospitalized.