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A man gives a thumbs-up after receiving his second dose of the Pfizer-BioNTech COVID-19 vaccine at Hyde Leisure Centre in Greater Manchester, Britain, on Jan. 7, 2021. British Prime Minister Boris Johnson told MPs on Wednesday that the government will use "every available second" of the lockdown to place an "invisible shield" around elderly and vulnerable people through the rollout of COVID-19 vaccines in the coming weeks. (Photo by Jon Super/Xinhua)
