Pain Points (image) Brown University Share Print E-Mail Caption Maps show the close overlap between drug overdose deaths with and without fentanyl, suggesting that fentanyl is pervasive in the illegal drug supply. Redder zones indicate the highest rates of overdose deaths. Credit Marshall et. al./Brown University Usage Restrictions with credit Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.