CVS Health CEO Larry Merlo raised c oncerns Thursday over the teen vaping crisis and the long-term health risks. “We don’t know the longitudinal effect of these products,” Merlo told CNBC’s “Squawk Box.” “Something has to be done.” Merlo said he saw signs that something was wrong with vaping in 2014, around the same time that CVS stopped selling tobacco products at its drug stores.

“I can remember going into a retail establishment that was selling [e-cigarettes] and I saw the device with the Hello Kitty logo and the bubblegum liquid,” he recalled. [...]