New York (AP) - The number of e-cigarette deaths in the US continues to rise. Thirty-three people in 24 US states died after using electronic cigarettes, according to the CDC. The dead were on average 44 years old, the youngest 17, the oldest 75. The cause is still unclear, according to CDC. Recently, there had been evidence that THC products might play a role. Among the better-researched cases, a majority of patients reported smoked products containing THC.