A visitor to the Harvard School of Public Health's mock safe injection setup checks out the items on the demonstration table set up underneath a tent on the quad near the medical school in Boston on April 30, 2018. Jessica Rinaldi/Getty Images hide caption
A drug user prepares a hit of heroin inside VANDU's supervised injection room. Rafal Gerszak for NPR hide caption
At safe injection sites like Insite, in Vancouver, Canada, drug users can inject drugs under the watch of trained medical staff who will help in case of overdose. Elana Gordon/WHYY hide caption