(BBC News) A patient has died after developing a severe respiratory disease due to vaping in the first such death in the US, say health officials.
It comes as experts investigate a mystery lung disease across the US that is linked to use of e-cigarettes.
The Centers for Disease Control and Prevention (CDC) said there were 193 "potential cases" in 22 US states.
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Many of the cases involve vaping THC, the main active compound in cannabis, CDC experts said.