The epidemiologist Salim Abdool Karim could be considered South Africa’s Anthony Fauci. As co-chair of the South African Ministerial Advisory Committee on Covid-19, he is the government’s top adviser on the pandemic and has become the country’s face of Covid-19 science. He also sits on the Africa Task Force for Novel Coronavirus, overseeing the continent’s response to the global crisis. Karim, who directs the Durban-based Centre for the Aids...