https://www.scmp.com/news/hong-kong/health-environment/article/3151495/coronavirus-hong-kong-airport-worker-tests
https://twitter.com/bencowling88/sta...77208561336322Leung said authorities should not drop their guard and keep testing airport workers twice a week, “especially if they are vaccinated”, as being inoculated would reduce symptoms and make infections harder to detect without regular screening.