New Extremely High Urine Cotinine Levels in Adolescents Who Vape Nicotine — Massachusetts, January 2023-January 2025

Dinah Sher Gongora, Boston Children's Hospital, Boston, MA, United States; Emily Nields, Boston Children's Hospital, Exeter, NH, United States; Sharon Levy, Boston Children's Hospital, Boston, MA, United States; Elissa R. Weitzman, Boston Children's Hospital, and Harvard Medical School, Brookline, MA, United States