A medical worker talks to a man at a vaccination clinic in Mel Lastman Square in Toronto, Canada, on July 24, 2021. The City of Toronto kicked off a weekend-long vaccination clinic here on Saturday, welcoming walk-ins to anyone aged 12 and older for the COVID-19 vaccinations. (Photo by Zou Zheng/Xinhua)
A staff member gives a man directions outside a vaccination clinic in Mel Lastman Square in Toronto, Canada, on July 24, 2021. The City of Toronto kicked off a weekend-long vaccination clinic here on Saturday, welcoming walk-ins to anyone aged 12 and older for the COVID-19 vaccinations. (Photo by Zou Zheng/Xinhua)
A man wearing a face mask receives a dose of the COVID-19 vaccine at a vaccination clinic in Mel Lastman Square in Toronto, Canada, on July 24, 2021. The City of Toronto kicked off a weekend-long vaccination clinic here on Saturday, welcoming walk-ins to anyone aged 12 and older for the COVID-19 vaccinations. (Photo by Zou Zheng/Xinhua)
People line up to enter a vaccination clinic in Mel Lastman Square in Toronto, Canada, on July 24, 2021. The City of Toronto kicked off a weekend-long vaccination clinic here on Saturday, welcoming walk-ins to anyone aged 12 and older for the COVID-19 vaccinations. (Photo by Zou Zheng/Xinhua)
People register at a vaccination clinic in Mel Lastman Square in Toronto, Canada, on July 24, 2021. The City of Toronto kicked off a weekend-long vaccination clinic here on Saturday, welcoming walk-ins to anyone aged 12 and older for the COVID-19 vaccinations. (Photo by Zou Zheng/Xinhua)