The number of new Covid-19 infection cases worldwide has jumped by 10%. Tabitha Mwangi, Programme Manager at Cambridge Africa at Cambridge University, gives us a rundown of how that overall increase is playing out in different parts of the world. Hong Kong had been one of the most successful places at controlling Covid-19 but recently faced the highest death rates in the world. What went wrong? We hear from Vivian Wong, a public health advisor and honorary professor of Chinese Medicine at the University of Hong Kong. And how are pandemic restrictions impacting people’s mental wellbeing? Christian Chan, an Associate Professor of Psychology at the University of Hong Kong and a warden at a student residence, shares his thoughts. Also, do you think you’re more likely to catch Covid-19 from a friend or a stranger? Ashley Whillans, a social psychologist at Harvard Business School in the US, tells us what happened when she asked people this very question. Presenter: Claudia Hammond Producer: Samara Linton (Picture: A worker cleans an area of Hong Kong International Airport on 21 March 2022 amid the Covid-19 pandemic. Photo credit: Dale de la Rey/AFP/Getty Images.)