People arrive at a COVID-19 immunization clinic at the Metro Toronto Convention Center (MTCC) in Toronto, Ontario, Canada, on Jan. 18, 2021. Ontario's first proof-of-concept COVID-19 immunization clinic opened here on Monday to help develop a blueprint for how shots could be administered in non-medical settings. (Photo by Zou Zheng/Xinhua)
People line up to enter a COVID-19 immunization clinic at the Metro Toronto Convention Center (MTCC) in Toronto, Ontario, Canada, on Jan. 18, 2021. Ontario's first proof-of-concept COVID-19 immunization clinic opened here on Monday to help develop a blueprint for how shots could be administered in non-medical settings. (Photo by Zou Zheng/Xinhua)
A staff member wearing a face mask and a face shield checks a man's appointment information at the entrance of a COVID-19 immunization clinic at the Metro Toronto Convention Center (MTCC) in Toronto, Ontario, Canada, on Jan. 18, 2021. Ontario's first proof-of-concept COVID-19 immunization clinic opened here on Monday to help develop a blueprint for how shots could be administered in non-medical settings. (Photo by Zou Zheng/Xinhua)
A staff member wearing a face mask and a face shield checks a man's appointment information at the entrance of a COVID-19 immunization clinic at the Metro Toronto Convention Center (MTCC) in Toronto, Ontario, Canada, on Jan. 18, 2021. Ontario's first proof-of-concept COVID-19 immunization clinic opened here on Monday to help develop a blueprint for how shots could be administered in non-medical settings. (Photo by Zou Zheng/Xinhua)
A man arrives at a COVID-19 immunization clinic at the Metro Toronto Convention Center (MTCC) in Toronto, Ontario, Canada, on Jan. 18, 2021. Ontario's first proof-of-concept COVID-19 immunization clinic opened here on Monday to help develop a blueprint for how shots could be administered in non-medical settings. (Photo by Zou Zheng/Xinhua)
A man wearing a face mask waits to enter a COVID-19 immunization clinic at the Metro Toronto Convention Center (MTCC) in Toronto, Ontario, Canada, on Jan. 18, 2021. Ontario's first proof-of-concept COVID-19 immunization clinic opened here on Monday to help develop a blueprint for how shots could be administered in non-medical settings. (Photo by Zou Zheng/Xinhua)
People line up to enter a COVID-19 immunization clinic at the Metro Toronto Convention Center (MTCC) in Toronto, Ontario, Canada, on Jan. 18, 2021. Ontario's first proof-of-concept COVID-19 immunization clinic opened here on Monday to help develop a blueprint for how shots could be administered in non-medical settings. (Photo by Zou Zheng/Xinhua)
Photo taken on Jan. 18, 2021 shows the interior of a COVID-19 immunization clinic at the Metro Toronto Convention Center (MTCC) in Toronto, Ontario, Canada. Ontario's first proof-of-concept COVID-19 immunization clinic opened here on Monday to help develop a blueprint for how shots could be administered in non-medical settings. (The City of Toronto/Handout via Xinhua)
Photo taken on Jan. 18, 2021 shows the interior of a COVID-19 immunization clinic at the Metro Toronto Convention Center (MTCC) in Toronto, Ontario, Canada. Ontario's first proof-of-concept COVID-19 immunization clinic opened here on Monday to help develop a blueprint for how shots could be administered in non-medical settings. (The City of Toronto/Handout via Xinhua)
A healthcare worker prepares a dose of the COVID-19 vaccine at a COVID-19 immunization clinic at the Metro Toronto Convention Center (MTCC) in Toronto, Ontario, Canada, on Jan. 18, 2021. Ontario's first proof-of-concept COVID-19 immunization clinic opened here on Monday to help develop a blueprint for how shots could be administered in non-medical settings. (The City of Toronto/Handout via Xinhua)