US vaping illness count tops 500, but cause still unknown KBJR 6Vaping-related illnesses surge as FDA discloses criminal probe The Washington Post'People are dying': Number of lung injuries linked to vaping surges to 530 cases as federal officials disclose criminal probe Milwaukee Journal SentinelVaping Illnesses Increase to 530 Probable Cases The New York TimesVaping-Sickness Cases Rise to 530 as U.S.