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)