40 people at Simi Valley preschool exposed to measles

LOS ANGELES (KABC) -- Forty people at Little Explorers Preschool Academy in Simi Valley have been exposed to measles, after a child who visited Disneyland was diagnosed earlier this week, health officials said Monday.

That child is one of eight Ventura County cases. More than 80 cases of measles, spread across a dozen states, have been reported.

Experts believe the outbreak began last month after an unvaccinated family was infected at Disneyland.

Pediatrician Dr. Charles Goodman is telling parents not to bring in their children if they aren't immunized.

"I am positive I will lose some patients. But I'm hoping those patients leave knowing that I'm trying to do the best thing for other kids," Goodman said.