Charting the Decline of the Fourth Wave: US Overdose Deaths by Race, Geography, and Substance Involvement. 

Charting the Decline of the Fourth Wave: US Overdose Deaths by Race, Geography, and Substance Involvement. 

Friedman JR, Palamar JJ, Ciccarone D, Gaines TL, Borquez A, Shover CL, Strathdee SA. 

medRxiv [Preprint]. 2026 Jan 30:2026.01.25.26344769. doi: 10.64898/2026.01.25.26344769. PMID: 41646704; PMCID: PMC12870678.

https://pmc.ncbi.nlm.nih.gov/articles/PMC12870678/