By Roderic Broadhurst, Matthew Ball, Chuxuan Jiang, Joy Wang and Harshit Trivedi

Opioids, including the highly potent synthetic opioids fentanyl and carfentanil, are commonly sold on illicit cryptomarkets or Tor darknet markets. Data collected throughout 2019 from 12 large darknet markets that sold opioids enabled observation of the impact of law enforcement seizures and voluntary or scam market closures on the availability of fentanyl and other opioids.

Trends in opioid and fentanyl availability before and after law enforcement interventions indicate whether market operators and sellers are deterred and whether market closures lead to displacement, dispersal or substitution. Evidence of all of these outcomes was present in both descriptive and trend analyses, although most effects were short lived. Market closures, especially law enforcement seizures, reduced the availability of opioids, in particular fentanyl, as well as increasing prices and displacing vendors to other markets. Market closures also led vendors to substitute fentanyl for other opioids or other illicit drugs.

Research Report no. 18. Canberra: Australian Institute of Criminology, 2021. 73p.

By Alex Brill | Scott Ganz

Recent data show a small decline in opioid-related mortality following a decade during which opioid-related mortality more than doubled to nearly 53,000 in 2018. However, the aggregate statistics mask important spatial and temporal trends in the data. This report estimates nationwide, regional, and county-level economic costs associated with the opioid crisis. The data show that, despite recent nationwide per capita opioid-related cost declines, the impact of the crisis continues to be felt across large swaths of the Northeast, Midwest, and South. We also find that opioid-related mortality tends to diffuse among nearby counties, with the local diffusion rate from illegal opioids—which are the primary cause in the current wave of the crisis—exceeding the rate from prescription opioids, which were the primary cause in earlier waves. The combination of lower aggregate mortality and faster diffusion among nearby counties points to a changed spatial distribution of economic costs as the opioid crisis evolves.

Washington DC: American Enterprise Institute, 2020.