Deterioration of mental health and insufficient Covid-19 information among disadvantaged immigrants in the greater Paris area Gosselin, A. Melchior, M. /Carillon, Séverine /Gubert, Flore /Ridde, Valéry Kohou, V. Zoumenou, I. Senne, J. N. /Desgrées du Loû, Annabel Makasi Study Group Immigrants Covid-19 Mental health Social epidemiology Lockdown containment Objectives: The aim of this study is to provide information on changes in mental health among disadvantaged immigrants from Sub-Saharan Africa in the Greater Paris area and their level of information about Covid-19. Methods: Prior to the Covid-19 epidemic, the Makasi community-based cohort followed 850 immigrants from sub-Saharan Africa in the Greater Paris area. Between the 1st of April and the 7th of June 2020, all participants scheduled for a follow-up survey were systematically included into an additional COVID-19-related wave of data collection (N = 100). We compared participants' type of housing, level of food insecurity, work and mental health (PHQ9) before and during the first COVID-19-related lockdown, using paired-Mc Nemar chi-2 tests. We next described their level of information on Covid-19 and policy measures, broken down by sex. Results: Among the 100 participants, 68% had no legal residence permit. Food insecurity was more often reported during lockdown than before (62% vs 52%). 9% of participants had a score indicative of severe depression (PHQ9) before lockdown and 17% afterwards (p = 0.17). Only 51% knew about the possibility of asymptomatic transmission of the COVID-19 virus. Conclusions: This study brings original information on a hard-to-reach population group. Our results suggest that the lockdown had a detrimental impact on various economic and mental health aspects among disadvantaged migrants residing in the Greater Paris area. 2021 text https://www.documentation.ird.fr/hor/fdi:010082092 fdi:010082092 Gosselin A., Melchior M., Carillon Séverine, Gubert Flore, Ridde Valéry, Kohou V., Zoumenou I., Senne J. N., Desgrées du Loû Annabel, Makasi Study Group. Deterioration of mental health and insufficient Covid-19 information among disadvantaged immigrants in the greater Paris area. 2021, 146, 110504 [4 ] EN FRANCE PARIS