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HONG KONG - JANUARY 9: Residents wait to receive a Pfizer-BioNTech COVID-19 vaccine at a mobile vaccination station temporarily set-up for elderly residents and walk-in service in Hong Kong on January 9, 2022. As at January 8th 2022, just under 70% of Hong Kong eligible population has received the 2nd vaccine and, with the third dose, only 7.5%. (Photo by Miguel Candela /Anadolu Agency via Getty Images)

HONG KONG - JANUARY 9: Residents wait to receive a Pfizer-BioNTech COVID-19 vaccine at a mobile vaccination station temporarily set-up for elderly residents and walk-in service in Hong Kong on January 9, 2022. As at January 8th 2022, just under 70% of Hong Kong eligible population has received the 2nd vaccine and, with the third dose, only 7.5%. (Photo by Miguel Candela  /Anadolu Agency via Getty Images)