The impact of social inequalities on people’s vulnerability to COVID-19, especially by non-pharmaceutical interventions (NPIs), has been widely discussed.
Hong Kong is currently undergoing the ‘third wave’ of local outbreaks. Its first two waves were mainly brought by visitors in late January and by return-students studying overseas in March. In mid-June, with no local cases for over 2 weeks, the government relaxed its NPIs, including lifting restrictions on physical distancing and reopening schools. However, an abrupt community outbreak struck the city 2 weeks later. The number of confirmed cases had almost tripled within 1 month from 1206 (30 June) to 3273 (31 July).
Unlike the first two waves, several clusters…