People wait for vaccination at a mass COVID-19 vaccination center at Kololo Ceremonial Grounds in Kampala, Uganda, May 31, 2021. (Photo by Hajarah Nalwadda/Xinhua)
A health worker prepares a dose of COVID-19 vaccine at Kololo Ceremonial Grounds in Kampala, Uganda, May 31, 2021. (Photo by Hajarah Nalwadda/Xinhua)
A man receives a dose of COVID-19 vaccine at Kololo Ceremonial Grounds in Kampala, Uganda, May 31, 2021. (Photo by Hajarah Nalwadda/Xinhua)
People line up to get their consent forms before receiving COVID-19 vaccine at Kololo Ceremonial Grounds in Kampala, Uganda, May 31, 2021. (Photo by Hajarah Nalwadda/Xinhua)