The COVID-19 crisis has rapidly increased the vulnerability of groups of population already facing precarious living conditions. The emergence of food and housing insecurity have forced health and social actors along with the local authorities to implement innovative responses in order to respond to these unmet needs. This article presents some of these responses, such as an interdisciplinary mobile COVID-19 screening team, an emergency housing program and a large-scale food assistance program. These examples highlight the need for an intersectoral, coordinated and collaborative response simultaneously targeting different domains of insecurity in parallel to actions on the underpinning social and political determinants of these vulnerabilities.