TOPSHOT - Medical workers carry a body on a stretcher from an hospital to the morgue in Kiev on April 9, 2021 as Ukraine registered this week a record number of deaths and hospitalisations due to the Covid-19. - Coronavirus unit is overwhelmed by patients who are admitted to the hospital round the clock as the country's aging healthcare system struggles to cope with the spread of the virus. (Photo by Sergei SUPINSKY / AFP)

Patients with COVID-19 are seen in a hospital in Lviv, western Ukraine, Tuesday, March 23, 2021. Ukraine, which is struggling with a third wave of rising coronavirus infections, has recorded its highest daily death toll from COVID-19. (AP Photo/Evgeniy Maloletka), APTOPIX

Patients with COVID-19 in a hospital in Lviv, western Ukraine, Tuesday, March 23, 2021. Ukraine, which is struggling with a third wave of rising coronavirus infections, has recorded its highest daily death toll from COVID-19. (AP Photo/Evgeniy Maloletka)

A nurse wearing a special suit against coronavirus walks to treat a patient with coronavirus at the intensive care unit at a hospital in the mining town of Selydove, 700 kilometers (420 miles) east of Kyiv, eastern Ukraine, Thursday, March 4, 2021. Ukraine received its first shipment of vaccine 500,000 AstraZeneca doses in late February. Yet, only about 19,000 people have been vaccinated since then. Ukrainians are becoming increasingly opposed to vaccination: an opinion poll this month by the Kyiv International Institute of Sociology found 60% of the country's people don't want to get vaccinated, up from 40% a month earlier. (AP Photo/Evgeniy Maloletka), APTOPIX

A medic wearing a special suit against coronavirus adjusts a coronavirus patient's oxygen mask at the intensive care unit at a hospital in the mining town of Selydove, 700 kilometers (420 miles) east of Kyiv, eastern Ukraine, Thursday, March 4, 2021. Ukraine received its first shipment of vaccine 500,000 AstraZeneca doses in late February. Yet, only about 19,000 people have been vaccinated since then. Ukrainians are becoming increasingly opposed to vaccination: an opinion poll this month by the Kyiv International Institute of Sociology found 60% of the country's people don't want to get vaccinated, up from 40% a month earlier. (AP Photo/Evgeniy Maloletka), APTOPIX

A patient with coronavirus breathes with the help of an oxygen mask at an intensive care unit in the regional hospital in Chernivtsi, western Ukraine, Wednesday, Feb. 24, 2021. The number of coronavirus cases in the western part of the country has risen sharply since the end of a strict two-week lockdown last month. (AP Photo/Evgeniy Maloletka), APTOPIX

An elderly woman suffering from COVID-19 breathes with the help of an oxygen mask in central district hospital of Kolomyia, western Ukraine, Tuesday, Feb. 23, 2021. After several delays, Ukraine finally received 500,000 doses of the AstraZeneca vaccine marketed under the name CoviShield, the first shipment of Covid-19 vaccine doses. The country of 40 million is one of the last in the region to begin inoculating its population. (AP Photo/Evgeniy Maloletka), APTOPIX

A medic wearing a special suit to protect against coronavirus, back to a camera prepares a patient with coronavirus for a lung X-ray at a hospital in Kolomyia, western Ukraine, Tuesday, Feb. 23, 2021. After several delays, Ukraine finally received 500,000 doses of the AstraZeneca vaccine marketed under the name CoviShield, the first shipment of Covid-19 vaccine doses. The country of 40 million is one of the last in the region to begin inoculating its population. (AP Photo/Evgeniy Maloletka), APTOPIX

Father Stephan, a Ukrainian Greek Catholic Church priest, wearing a special suit to protect himself against coronavirus, stands, after visiting patients with COVID-19 at an intensive care unit of the emergency hospital in Lviv, Western Ukraine, Saturday, Jan. 9, 2021. Ukraine imposed a wide-ranging lockdown which began Friday, closing schools and entertainment venues and restaurant table service through Jan. 25. (AP Photo/Evgeniy Maloletka), APTOPIX

Father Stephan, a Ukrainian Greek Catholic Church priest, wearing a special suit to protect himself against coronavirus, visits patients with COVID-19 at an intensive care unit of the emergency hospital in Lviv, Western Ukraine, Saturday, Jan. 9, 2021. Ukraine imposed a wide-ranging lockdown which began Friday, closing schools and entertainment venues and restaurant table service until Jan. 25. (AP Photo/Evgeniy Maloletka), APTOPIX

Medical workers move the body of a patient who died from the coronavirus at a hospital in Stebnyk, Ukraine, on Wednesday, Sept. 30, 2020. As coronavirus cases increase, every bed in the hospital in this city in western Ukraine is in use and its chief doctor is watching the surge with alarm and anguish. (AP Photo/Evgeniy Maloletka), APTOPIX

Doctor Oleh Hornostayev, wearing a special suit to protect against coronavirus, speaks to a patient with coronavirus at an intensive care unit at the city hospital in Stryi, Ukraine, Tuesday, Sept. 29, 2020. The worldwide death toll from the coronavirus eclipsed 1 million, nine months into a crisis that has devastated the global economy, tested world leaders' resolve, pitted science against politics and forced multitudes to change the way they live, learn and work. (AP Photo/Evgeniy Maloletka), APTOPIX

A medic wearing a special suit to protect against coronavirus prepares a patient with coronavirus for a lung X-ray at the city hospital in Stryi, Ukraine, Tuesday, Sept. 29, 2020. The worldwide death toll from the coronavirus eclipsed 1 million, nine months into a crisis that has devastated the global economy, tested world leaders' resolve, pitted science against politics and forced multitudes to change the way they live, learn and work. (AP Photo/Evgeniy Maloletka), APTOPIX

Dr. Oleh Hornostayev speaks to a coronavirus patient at a hospital intensive care unit in Stryi, Ukraine, on Tuesday, Sept. 29, 2020. Coronavirus infections in Ukraine began surging in late summer, and the ripples are hitting towns in the western part of the country. The government wants to avoid imposing a new lockdown, but officials acknowledge that the rising infections could make it necessary. (AP Photo/Evgeniy Maloletka), APTOPIX