A clinical trials patient receives a dose of AstraZeneca test vaccine at the University of Witwatersrand' Soweto's Chris Sani Baragwanath Hospital facility outside Johannesburg Nov. 30, 2020. South Africa is scrambling to come up with a new vaccination strategy to combat COVID-19 following its suspension of the rollout of the AstraZeneca vaccine, after a preliminary test showed weak results in protecting the variant dominant in this country. Among the possibilities being considered are giving one dose of AstraZeneca in the hopes it will protect against severe disease and death from the variant. (AP Photo/Jerome Delay)
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