a potential new wave. our experience of fighting this virus has shown us it's best to act decisively and swiftly when we see a potential threat, which is why we're building our defences and putting these measures in place without delay. omicron was first reported by south africa and is driving infection in its most populated province. also in the programme: twitter founderjack dorsey is stepping down as ceo. he says the company is ready to "move on from its founders". twitter�*s chief technical officer will replace him. and we'll be live from new york as ghislaine maxwell, close associate of convicted paedophilejeffrey epstein, goes on trial for sex trafficking.