Hong Kong Chief Executive Carrie Lam Cheng Yuet-ngor has defended the city’s move to ramp-up Covid-19 restrictions, including lowering a cap on public gatherings to only two people and expansion of a “vaccine pass” scheme to cover shopping centres, supermarkets and hair salons. Lam stressed the need to put public health over personal freedom at a time of crisis, and said the city will continue to maintain a “dynamic zero-infection policy” – the preferred method of containment used in mainland…