A general view of treatment blocks at a temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov TPX IMAGES OF THE DAY

A general view of the temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

Medical workers perform a procedure on a patient at a temporary hospital in the Krylatskoye Ice Palace, where people suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

A man gets out of an ambulance at a temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

A general view of treatment blocks at a temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

Patients are seen at a temporary hospital in the Krylatskoye Ice Palace, where people suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

Medical specialists wearing protective gear look at the blocks of the temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

A medical worker takes care of a patient at a temporary hospital in the Krylatskoye Ice Palace, where people suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

A biohazard sign is seen at a temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

A general view of treatment blocks at a temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

A patient is seen before tomography at a temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov TPX IMAGES OF THE DAY

A medical worker is seen at a temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

A general view of treatment blocks at a temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

Medical workers are seen at a temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

A medical worker looks on at a temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

A medical worker disinfects food trolleys at a temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

Empty beds are seen at a temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

A medical worker leads a qi gong session for patients at a temporary hospital in the Krylatskoye Ice Palace, where people suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov

A general view of the temporary hospital in the Krylatskoye Ice Palace, where patients suffering from the coronavirus disease (COVID-19) are treated, in Moscow, Russia November 13, 2020. Picture taken November 13, 2020. REUTERS/Maxim Shemetov