Evaluation of Vaccination Coverage and Determinants of Success of the COVID-19 Vaccination Program Among Populations in Very Precarious Situations

PREVAC: Evaluation of Vaccination Coverage and Determinants of Success of the COVID-19

The main objective of the study is to assess the level of vaccination coverage (VC) against COVID-19 among migrants, homeless and travelling community, according to their living conditions and housing.

The secondary objectives are :

• to compare the estimated level of vaccination coverage in the different sites and strata (emergency shelters/hotels, camps, workers' hostels, on the street) with the estimated level in the general population of the same territory obtained from the French Health Insurance data (SIVAC).
• identify the obstacles and leverage of vaccination (i.e. mobile team) according to living conditions and habitat (socio-demographic factors, personal health history, vaccine adherence, local health policies, etc.).

Inclusion Criteria:

• Adult (18 years and older)
• People considered as homeless (homeless, living in a camp or squat) or
• Living in adapted housing (migrant workers' hostel) or
• Housed in residences of the National System or
• Housed in a social residence such as a 115 hotel or a social housing centre
• Freely and voluntarily consenting to participate

Exclusion Criteria:

• Refusal to participate in the study (non-consent).
• Language barrier with no in-person or telephone translation available.
• Impossibility to give free and informed consent (comprehension barrier, cognitive and/or psychiatric and/or addictive disorders, external pressure from family and friends, persons under guardianship, etc.).