Chief Executive of the Hong Kong Special Administrative Region (HKSAR) Carrie Lam shows her COVID-19 vaccination record in Hong Kong, south China, Feb. 22, 2021. Carrie Lam and some senior officials of the HKSAR government on Monday received their first shots of the COVID-19 vaccine ahead of a mass rollout starting later this week. (Xinhua/Wang Shen)

Chief Executive of the Hong Kong Special Administrative Region (HKSAR) Carrie Lam receives her first shot of the COVID-19 vaccine in Hong Kong, south China, Feb. 22, 2021. Carrie Lam and some senior officials of the HKSAR government on Monday received their first shots of the COVID-19 vaccine ahead of a mass rollout starting later this week. (Xinhua/Wang Shen)

Government officials of the Hong Kong Special Administrative Region receive their first shots of the COVID-19 vaccine in Hong Kong, south China, Feb. 22, 2021. Chief Executive of the Hong Kong Special Administrative Region (HKSAR) Carrie Lam and some senior officials of the HKSAR government on Monday received their first shots of the COVID-19 vaccine ahead of a mass rollout starting later this week. (Xinhua/Wang Shen)

Matthew Cheung (3rd R), chief secretary for administration of the Hong Kong Special Administrative Region government receives his first shot of the COVID-19 vaccine in Hong Kong, south China, Feb. 22, 2021. Chief Executive of the Hong Kong Special Administrative Region (HKSAR) Carrie Lam and some senior officials of the HKSAR government on Monday received their first shots of the COVID-19 vaccine ahead of a mass rollout starting later this week. (Xinhua/Wang Shen)