Up to April 7th, 2020, approximately half (45%, 10/22) of the Swiss radiation-oncology departments had been confronted with patients diagnosed with COVID-19, with 73% of the centers (16/22) experiencing a reduction of their daily activity (Suppl. Figs. 1 and 2). As far as human resources were concerned, 18% of the departments suffered from staff shortage (4/22), with COVID-19 infection among staff members observed in 5 out of 22 centers (23%,) and part/full-time shift of collaborators in a COVID-19 unit imposed in 6 out of 22 centers (27%).