South Africa's Ramaphosa scrambles for enough Covid-19 vaccines

The scramble by South Africa for Covid-19 vaccines is intensifying pressure on the government to square its plans for immunizing the country with reality. President Cyril Ramaphosa has sketched out a program to acquire and administer enough vaccines to immunize two-thirds of South African’s population of 58 million by the end of this year with the goal of achieving so-called herd immunity. But the plan suffers from a shortage of specifics and a surfeit of ambition, say some in the public health community, who have counseled the government to rethink its target and up its transparency.