Fig. 1From: A multimorbidity model for estimating health outcomes from the syndemic of injection drug use and associated infections in the United StatesSchema for the Multimorbidity Model to Reduce Infections Associated with Drug Use (MYRIAD). Notes: HCV: hepatitis C virus; OUD: opioid use disorder; CNS: central nervous system. All persons in the model start in an active injection drug use state within the “low-risk,” “medium-risk,” and “OUD” statesBack to article page