Preclinical models of addictive drugs have been developed for decades to model aspects of
the clinical experience in substance use disorders (SUDs). These include passive exposure …

Background Illicitly manufactured fentanyl (IMF) increases overdose mortality, but its role in
infectious disease transmission is unknown. We examined whether IMF use predicts …

Structured abstract Background Injecting, smoking, and snorting heroin/synthetic opioids is
each associated with unique health risks. It is unclear how route of administration (ROA) …

Background Xylazine is an increasingly common adulterant in the North American
unregulated drug supply that is associated with adverse health outcomes (eg, skin …

Background In response to the recent and growing shift from injecting heroin to smoking
fentanyl, an increasing number of syringe services programs (SSPs) in the United States are …

Background: In response to the recent and growing shift from injecting opioids to smoking
fentanyl, an increasing number of syringe services programs (SSPs) in the USA are …

Background: Changes to the US drug supply historically unfold slowly with predictable
patterns of geographic diffusion. Here we draw on drug checking results from around the …

Background Xylazine is an increasingly common adulterant in the North American
unregulated drug supply that is associated with adverse health outcomes (eg, skin …

To better characterize trends in route of opioid consumption and associations with overdose,
we analyzed data from six cycles of the National HIV Behavioral Surveillance survey from …

● The number of overdose deaths due to fentanyl has been increasing globally, especially
in North America1.● Fentanyl is more potent, rapid-acting, and shorterlasting than heroin …