Much of Africa is struggling with vaccine access. Should western nations rethink boosters?

As western countries discuss the rollout of COVID vaccine boosters, millions around the world are still waiting for their first shot. COVID has killed 200,000 people across Africa, which has nearly 8 million confirmed cases. While South Africa is on track to have a majority vaccinated by the end of the year, many other sub-Saharan countries are lagging dangerously behind. William Brangham reports.

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