(CNN) Maureen McCormick does not approve of an anti-vaccination group using her image to downplay the seriousness of measles.

The group is referencing an episode of "The Brady Bunch" from 1969 in which McCormick, who played Marcia Brady on the family sitcom, catches measles along with her other siblings. In it Marcia says, "If you have to get sick, you sure can't beat the measles."

"I think it's really wrong when people use people's images today to promote whatever they want to promote and the person's image they're using, they haven't asked or they have no idea where they stand on the issue," McCormick told NPR

She also added that her own daughter was vaccinated.

"Having the measles was not a fun thing," McCormick recalled of when she actually got measles as a child. "I remember it spread through my family."

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