Thirty studies were found, twelve were excluded (among them nine were related to the management of pain during the crisis). The remaining results were mostly letters or commentaries concerning the pressing threat to US public health, due the management of the US opioid crisis jointly to the COVID-19 crisis. Persons with opioid use disorders (OUDs), who frequently have pre-existing mental and physical health problems, also have an increased vulnerability to poor health and mental distress (Sun et al., 2020). Most experts fear an on-going « Opioid Crisis » that could endanger and further marginalize an already at-risk population (Alexander et al., 2020; Becker and Fiellin, 2020; Jenkins et al., 2020; Sun et al., 2020; Wilson et al., 2020). The most important issue is to ensure service continuity and accessibility of Opioid Substitution Treatment (OST) during the pandemic (Sun et al., 2020).
