People wait to be vaccinated by a member of the Western Cape Metro EMS (Emergency Medical Services) at a mobile "Vaxi Taxi" which is an ambulance converted into a mobile COVID-19 vaccination site in Blackheath in Cape Town, South Africa, Tuesday, Dec. 14, 2021. The omicron variant appears to cause less severe disease than previous versions of the coronavirus, and the Pfizer vaccine seems to offer less defense against infection from it but still good protection from hospitalization, according to an analysis of data from South Africa, where the new variant is driving a surge in infections. (AP Photo/Nardus Engelbrecht)
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