A health worker wearing personal protective equipment administers a dose of COVID-19 vaccines to a woman at a COVID-19 vaccination clinic at the Toronto Zoo in Toronto, Ontario, Canada, on Jan. 12, 2022. A new mass COVID-19 vaccination clinic was opened at the Toronto Zoo on Wednesday to support the Province of Ontario's booster campaign. (Photo by Zou Zheng/Xinhua)
People wearing face masks register at a COVID-19 vaccination clinic at the Toronto Zoo in Toronto, Ontario, Canada, on Jan. 12, 2022. A new mass COVID-19 vaccination clinic was opened at the Toronto Zoo on Wednesday to support the Province of Ontario's booster campaign. (Photo by Zou Zheng/Xinhua)
People wearing face masks wait in line to receive COVID-19 vaccines at a COVID-19 vaccination clinic at the Toronto Zoo in Toronto, Ontario, Canada, on Jan. 12, 2022. A new mass COVID-19 vaccination clinic was opened at the Toronto Zoo on Wednesday to support the Province of Ontario's booster campaign. (Photo by Zou Zheng/Xinhua)
A health worker wearing personal protective equipment administers a dose of COVID-19 vaccines to a woman at a COVID-19 vaccination clinic at the Toronto Zoo in Toronto, Ontario, Canada, on Jan. 12, 2022. A new mass COVID-19 vaccination clinic was opened at the Toronto Zoo on Wednesday to support the Province of Ontario's booster campaign. (Photo by Zou Zheng/Xinhua)
A health worker wearing personal protective equipment administers a dose of COVID-19 vaccines to a woman at a COVID-19 vaccination clinic at the Toronto Zoo in Toronto, Ontario, Canada, on Jan. 12, 2022. A new mass COVID-19 vaccination clinic was opened at the Toronto Zoo on Wednesday to support the Province of Ontario's booster campaign. (Photo by Zou Zheng/Xinhua)
