A nurse takes a swab sample from a pupil during a PCR test to detect Covid-19 virus (coronavirus) in a college in Vico on the French Mediterranean island of Corsica, on January 29, 2021. After few positive cases of Covid-19 in different schools, a test campaign has started this week in several colleges and high-schools on the island of Corsica.,Image: 587016961, License: Rights-managed, Restrictions: , Model Release: no