Table 4.

Reported barriers on the vaccine uptake (on the left) among European prison staff members, and strategies and intervention suggested (on the right)

Country	Vaccine uptake: main barriers			Strategies and Interventions
	Lack of knowledge/Misinformation	Conspiracy Theory/Misbeliefs	Vaccines are not free of charge	Knowledge dissemination	Peer-education	Question/Answer sessions with experts	Active recommendation of vaccines/Opt-out programs	Other
Belgium	No Barriers
Cyprus			●				●
Croatia			●	●		●	●
England	No Barriers
Finland	●	●					●
France	●	●		●			●
Ireland	●			●
Italy	●	●		●
Latvia	●			●	●	●	●
Luxemburg	No Barriers
Malta	●			●	●		●
Moldova	●						●
Netherlands	No interest, lack of risk perception							●
Norway	No Barriers
Portugal	●			●
Romania	No Barriers
Slovakia	●	●		●		●	●
Spain (Catalonia)		●		●			●
Sweden	●							●
Ukraine				●