A medical specialist, wearing a protective suit amid the coronavirus disease (COVID-19) outbreak, assists an elderly woman to cross a road in Moscow, Russia May 14, 2020.

A patient lies on a bed as medical specialists gather in a ward of the Central Clinical Hospital "RZD-Medicine", which delivers treatment to people infected with the coronavirus disease (COVID-19), in Moscow, Russia May 18, 2020. Sofya Sandurskaya/Moscow News Agency/Handout via REUTERS

Patients receive treatment in an intensive care unit of the Central Clinical Hospital "RZD-Medicine", which delivers medical aid to people infected with the coronavirus disease (COVID-19), in Moscow, Russia May 18, 2020. Sofya Sandurskaya/Moscow News Agency/Handout via REUTERS

Grave diggers using personal protective equipment (PPE) bury a person, who presumably died of the coronavirus disease (COVID-19), as mourners wearing face masks gather in the special purpose section of a graveyard on the outskirts of Saint Petersburg, Russia May 13, 2020.

A medical specialist wearing a protective glove puts a pulse oximeter on a patient's finger in the Central Clinical Hospital "RZD-Medicine", which delivers treatment to people infected with the coronavirus disease (COVID-19), in Moscow, Russia May 18, 2020. Sofya Sandurskaya/Moscow News Agency/Handout via REUTERS

Russia's Emergencies Ministry members wearing protective gear spray disinfectant while sanitizing the Leningradsky railway station amid the outbreak of the coronavirus disease (COVID-19) in Moscow, Russia May 19, 2020.

Russia's Emergencies Ministry members wearing personal protective equipment (PPE) spray disinfectant while sanitizing the platforms of the Kievsky Railway Station amid the outbreak of the coronavirus disease (COVID-19) in Moscow, Russia May 18, 2020. Sofya Sandurskaya/Moscow News Agency/Handout via REUTERS

Specialists wearing protective gear spray disinfectant while sanitizing an underground passage amid the outbreak of the coronavirus disease (COVID-19) in Moscow, Russia May 16, 2020.

Medical specialists transport a person on a stretcher outside a hospital for patients infected with the coronavirus disease (COVID-19) on the outskirts of Moscow, Russia May 12, 2020.

A medical specialist wearing personal protective equipment (PPE) enters a room in the Central Clinical Hospital "RZD-Medicine", which delivers treatment to patients infected with the coronavirus disease (COVID-19), in Moscow, Russia May 18, 2020. Sofya Sandurskaya/Moscow News Agency/Handout via REUTERS

Grave diggers wearing protective suits carry a coffin during the burial of a coronavirus disease (COVID-19) victim at a cemetery on the outskirts of Moscow, Russia May 15, 2020. Kirill Zykov/Moscow News Agency/Handout via REUTERS

Vehicles spray disinfectant while sanitizing a road amid the outbreak of the coronavirus disease (COVID-19) in Moscow, Russia May 16, 2020.

A medical specialist puts on personal protective equipment (PPE) next to an instruction in the Central Clinical Hospital "RZD-Medicine", which delivers treatment to patients infected with the coronavirus disease (COVID-19), in Moscow, Russia May 18, 2020. Sofya Sandurskaya/Moscow News Agency/Handout via REUTERS

A grave digger wearing a protective suit stands by a grave during the burial of a coronavirus disease (COVID-19) victim at a cemetery on the outskirts of Moscow, Russia May 15, 2020. Kirill Zykov/Moscow News Agency/Handout via REUTERS

A member of the Russian Emergencies Ministry wearing protective gear sprays disinfectant while sanitizing the Leningradsky railway station amid the outbreak of the coronavirus disease (COVID-19) in Moscow, Russia May 19, 2020.