Immunity

The trick to tackling Covid-19 at this stage is to be adaptive. The government’s one-size-fits-all approach is broken; we need to be more flexible. But we should not throw away…

South Africa has doubled the interval for the second dose of the Pfizer vaccine. We take a look at what other countries have done and the evidence for the move

A team working with the country’s Covid ministerial advisory committee uses a formula to keep tabs on the rise of infections. Here’s how it works

These institutions are a crucial part of the research and development process that underpins South Africa’s life-and-death fight against the Covid-19 outbreak

Hong Kong must defer to China’s decision to grant immunity to Grace Mugabe over an alleged attack because Beijing is in charge of foreign affairs.