A medical worker injects COVID-19 vaccine for a senior citizen in Fengxian District of Shanghai, April 21, 2022. Senior citizens are encouraged to get COVID-19 vaccines in Shanghai. (Photo: China News Service/Yin Liqin)
A medical work takes temperature for a senior citizen in Fengxian District of Shanghai, April 21, 2022. Senior citizens are encouraged to get COVID-19 vaccines in Shanghai. (Photo: China News Service/Yin Liqin)
A medical worker prepares a dose of COVID-19 vaccine in Fengxian District of Shanghai, April 21, 2022. Senior citizens are encouraged to get COVID-19 vaccines in Shanghai. (Photo: China News Service/Yin Liqin)
A medical worker helps fill out registration form for seniors in Fengxian District of Shanghai, April 21, 2022. Senior citizens are encouraged to get COVID-19 vaccines in Shanghai. (Photo: China News Service/Yin Liqin)
A medical worker helps fill out registration form for seniors in Fengxian District of Shanghai, April 21, 2022. Senior citizens are encouraged to get COVID-19 vaccines in Shanghai. (Photo: China News Service/Yin Liqin)
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