Health officials distribute sample collection tubes to residents at a makeshift Covid-19 testing station outside the Yat Kwai House building placed under lockdown at the Kwai Chung Estate public housing complex in Hong Kong, China, on Friday, Jan 21, 2022. Hong Kong is locking down about 2,700 residents for five days, the first time its closed off an apartment complex for more than 48 hours, in the hope of containing a superspreader event that has already led to 16 people testing positive for Covid. Photographer: Lam Yik/Bloomberg via Getty Images
