NEW YORK (AP) — An outbreak of vaping illnesses. A surge in teens using electronic cigarettes. They're often spoken of in the same urgent breath, but it's not clear how — or even if — they are connected.

Following a shakeup at Juul Labs Inc., the largest U.S. seller of e-cigarettes, here are some questions and answers about vaping:

(Copyright © 2019 APG Media)

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