Hear about Hong Kong’s fifth wave of the pandemic. Microbiologist Dr Siddharth Sridhar unpacks Hong Kong's 2020-era zero Covid policy as the reality of low vaccinations in the elderly and the Omicron variant hits; Hong Kong Veterinary Association president Dr Owen Swan reveals the science and emotions behind the order to cull thousands of hamsters, SCMP journalists Chad Bray and Gigi Choy report on the exodus of Hong Kong's finance sector and the quest to track Hong Kong's omicron spread.