A top epidemiologist has urged Hong Kong to lift flight bans and allow residents to return to the city now the risk of local Covid-19 transmission exceeds that posed by imported cases, as officials revealed more than 17,000 infections were reported in a single day.Professor Gabriel Leung, dean of the University of Hong Kong’s (HKU) faculty of medicine, on Thursday also said the city should ramp up vaccinations among children before classes resumed in April to prevent yet another wave of…
