UEFA Euro 2020 squads - Wikipedia
https://en.wikipedia.org/wiki/UEFA_Euro_2020_squadsPlayers who either tested positive for SARS-CoV-2 or had been declared as "close contacts" of a positive SARS-CoV-2 tested person – and therefore were put in isolation by the decision of health authorities – were considered cases of serious illness and could therefore be replaced before the first match. If a group of players of a team were placed into mandatory quarantine or self-isolation prior to a …