Swan Hellenic said it will require COVID-19 vaccination as a pre-embarkation medical requirement for all ship’s staff and crew. This is part of Swan Hellenic's other health-care measures, including UV-C air sanitation, taken in consultation with Vikand Solutions. Other cruise operators mandating COVID-19 vaccination include American Queen Steamboat Co. and Victory Cruise Lines, for both passengers and crew, and Saga Cruises, for passengers only.