Ukraine's Nations League game in Switzerland on Tuesday has been called off after three of their players tested positive for coronavirus.
The entire Ukraine squad have been placed into quarantine after Eduard Sobol, Yevhen Makarenko and Dmytro Riznyk tested positive on Monday.
Uefa has not yet decided what action to take.
Andriy Shevchenko's side travelled to winless Switzerland after Saturday's 3-1 League A Group 4 defeat by Germany.
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