Francois Balloux

Francois Balloux is professor of computational systems biology and director of the UCL Genetics Institute

Why China can’t stop zero Covid

The Covid situation in China is not looking good right now. The authorities have trapped themselves into a situation from which there’s no obvious escape strategy. Whatever they choose – or will be forced – to do next will be very costly. The country is extremely poorly prepared for a major surge of the virus

Should we worry about the BA.2 Omicron variant?

When the Omicron variant (now categorised as BA.1) swept across the world at the end of last year it was seen by optimists as the final chapter in the Covid story – it was so contagious it would infect essentially anyone, but would be far less likely to cause serious illness. Now a new wave