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

Study Overview
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Brief Summary
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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.).

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

Conditions
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COVID-19

Intervention / Treatment
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* Other: Vaccination coverage


Participation Criteria
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Eligibility Criteria
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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.).

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Shelters Paris/93<br> | Other: Vaccination coverage<br>* proportion of people declaring to have received at least one dose of vaccination against COVID-19 among target population<br>|
| Workers' hostels Paris/93<br> | Other: Vaccination coverage<br>* proportion of people declaring to have received at least one dose of vaccination against COVID-19 among target population<br>|
| travelling community IDF(77/93/95)<br> | Other: Vaccination coverage<br>* proportion of people declaring to have received at least one dose of vaccination against COVID-19 among target population<br>|
| Street/Camps Paris/93<br> | Other: Vaccination coverage<br>* proportion of people declaring to have received at least one dose of vaccination against COVID-19 among target population<br>|
| Covid Homeless and migrants Marseille<br> | Other: Vaccination coverage<br>* proportion of people declaring to have received at least one dose of vaccination against COVID-19 among target population<br>|
| Hostel Paris/93<br> | Other: Vaccination coverage<br>* proportion of people declaring to have received at least one dose of vaccination against COVID-19 among target population<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Vaccination coverage among COVID-19 | Assess the proportion of people declaring to have received at least one dose of vaccination against COVID-19 among migrants, homeless and travelling community, according to their living conditions and housing | one month | 
| Identify the most appropriate conditions for the use of vaccination against COVID-19 | Promote interventions to encourage the use of COVID-19 vaccination | one month | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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vaccination coverage, migrants, homeless, travelling community