As measles cases spread, the tinder for more outbreaks is growing - STAT

As measles cases spread, the tinder for more outbreaks is growing - STAT

As measles cases spread, the tinder for more outbreaks is growing

By HELEN BRANSWELL

OLIVIER MORIN/AFP/GETTY IMAGES

U.S. health officials are putting all they have into extinguishing measles outbreaks, but the size of the population vulnerable to infection is growing.

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