Number of countries Most Adopted Measures Creation of isolation areas 39 Suspension of all on-site visits 29 Use of masks by custodial staff 26 Compensation measures (phone calls, video-visits, etc) 4 25 Isolation of symptomatic individuals 19 Environmental cleaning measures 18 InterInstitutional collaboration 18 Training and awareness raising 16 Restrictions on mobility 15 Transfer of the sick inmates to hospital 15