L.A.: Where the rich don’t vaccinate

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L.A.: Where the rich don't vaccinate

L.A.'s wealthiest neighborhoods have child vaccination rates lower than West Africa. CNN's Kyung Lah reports.

03:47 - Source: CNN

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L.A.: Where the rich don't vaccinate

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Republican presidential hopeful Ben Carson speaks during the Republican presidential debate at the Ronald Reagan Presidential Library in Simi Valley, California on September 16, 2015. Republican presidential frontrunner Donald Trump stepped into a campaign hornet's nest as his rivals collectively turned their sights on the billionaire in the party's second debate of the 2016 presidential race. AFP PHOTO / FREDERIC J. BROWN (Photo credit should read FREDERIC J BROWN/AFP/Getty Images)

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MYRTLE BEACH, SC - JANUARY 18: Dr. Ben Carson speaks at the South Carolina Tea Party Coalition convention on January 18, 2015 in Myrtle Beach, South Carolina. A variety of conservative presidential hopefuls spoke at the gathering on the second day of a three day event. (Photo by Richard Ellis/Getty Images)

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Among vaccines delayed until a child grows older, the measles-mumps-rubella (MMR) vaccine topped the list.

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