BOOSTING THE FIGHT: While South Africa has not yet broadened booster shots beyond healthcare workers and certain categories of immunocompromised individuals, vaccine booster shots are likely to become an important part of the long-term fight against Covid-19. This is true not only for South Africa but elsewhere, as the world moves to find ways to live with the virus and all the initial talk of herd immunity fades. Photograph: Siphiwe Sibeko for Reuters.