Table 1

Eligibility criteria

Domain	Criteria
Domain	Inclusion criteria	Exclusion criteria
Time restriction	Literature (including grey literature) published between 1 January 2000 and 31 September 2022.	Literature published before 1 January 2000.
Language restriction	Literature available in English.	Literature published in other languages.
Population	Asylum seeker, refugees, undocumented migrants.	Regular migrants, international students, migrants in general without any reference to the legal status of this migrant population that can determine whether this population includes asylum seekers, refugees, or undocumented migrants, or not.
Intervention	Access to essential medicines and vaccines; barriers to access to essential medicines and vaccines.	Access to healthcare in general, without any reference to access to medicines.
Setting	Country of origin, transit, destination (European countries), deportation settings.	Non-EU countries of destination.
Study type	Qualitative, quantitative, mixed methods studies, reviews and meta-analysis, grey literature, UN agency reports, NGO reports.	None.