The United States has had 1,454 measles cases this year, more than at any other point since the disease was declared eliminated in 2000. CDC/Getty Images

A school-age child in Los Angeles County who had measles as an infant has died of a rare complication, the county health department said Thursday.

The child was infected before they were eligible to receive the measles vaccine, the agency says; the first vaccination is recommended between 12 months and 15 months of age, followed by a second dose between ages 4 and 6.

They recovered from that infection but developed a condition called subacute sclerosing panenecephalitis, which affects about 1 in 10,000 unvaccinated people who get measles overall but up to 1 in 600 of those who catch the virus in infancy.

SSPE , as the complicatio

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