Cannabis-Involved Emergency Department Visits Among Persons Aged <25 Years Before and During the COVID-19 Pandemic — United States, 2019–2022 Posted on July 21, 2023July 31, 2023 By sdargoltz Douglas R. Roehler, PhD; Herschel Smith IV, MPH; Lakshmi Radhakrishnan, MPH; Kristin M. Holland, PhD; Abigail L. Gates, MSPH; Alana M. Vivolo-Kantor, PhD; Brooke E. Hoots, PhD MMWR; 72(28); July 14, 2023 Access article Cannabis and Cannabinoids, Chemistry, Crime Scene Investigation and Reconstruction, DREs / Traffic Safety Resource Prosecutors, Forensic Pathology and Medicolegal Death Investigation, Seized Drugs/Controlled Substances, Toxicology