Customers show their proof of COVID-19 vaccination before entering the seating area of a food court at a shopping center in Toronto, Ontario, Canada, on Sept. 22, 2021. As of Sept. 22, Ontarian residents who are 12 years of age and older need to be fully vaccinated and provide their proof of vaccination or provide proof of a legitimate medical exemption along with photo ID to access certain public settings and facilities. (Photo by Zou Zheng/Xinhua)