“…While COVID-19 vaccination is a critical strategy for reducing the impacts of the pandemic (Centers for Disease Control and Prevention), some research has shown that COVID-19 vaccine uptake among PWID has lagged behind that of the general population ( Menza et al, 2022 , Strathdee et al, 2021b ), aligning with studies finding low rates of vaccination among PWID for influenza, HPV, and hepatitis B ( Price et al, 2021 , Sadang et al, 2021 , Feinberg and Pearce, 2021 ). In studies among PWID in diverse settings including the United States, Mexico, and Australia, vaccine hesitancy is a prominent concern that may be tied to socio-economic factors (e.g., education), beliefs about COVID-19 (including COVID-19 disinformation), and concerns about safety and side effects ( Strathdee et al, 2021b , Cioffi et al, 2022 , Iversen et al, 2021 ).…”