Students wearing face masks are seen at the University of British Columbia (UBC) in Vancouver, British Columbia, Canada, on Feb. 7, 2022. Free masks and rapid tests were available to UBC students on Monday as most in-person learning returned after a delayed start due to the Omicron variant of COVID-19. (Photo by Liang Sen/Xinhua)
A volunteer distributes KN95 masks at the University of British Columbia (UBC) in Vancouver, British Columbia, Canada, on Feb. 7, 2022. Free masks and rapid tests were available to UBC students on Monday as most in-person learning returned after a delayed start due to the Omicron variant of COVID-19. (Photo by Liang Sen/Xinhua)
Students wearing face masks are seen at a campus of the University of British Columbia (UBC) in Vancouver, British Columbia, Canada, on Feb. 7, 2022. Free masks and rapid tests were available to UBC students on Monday as most in-person learning returned after a delayed start due to the Omicron variant of COVID-19. (Photo by Liang Sen/Xinhua)
A staff member distributes face masks to a student at a campus of the University of British Columbia (UBC) in Vancouver, British Columbia, Canada, on Feb. 7, 2022. Free masks and rapid tests were available to UBC students on Monday as most in-person learning returned after a delayed start due to the Omicron variant of COVID-19. (Photo by Liang Sen/Xinhua)
A student receives a COVID-19 antigen test kit and face masks at the University of British Columbia (UBC) in Vancouver, British Columbia, Canada, on Feb. 7, 2022. Free masks and rapid tests were available to UBC students on Monday as most in-person learning returned after a delayed start due to the Omicron variant of COVID-19. (Photo by Liang Sen/Xinhua)
Students wearing face masks are seen at a campus of the University of British Columbia (UBC) in Vancouver, British Columbia, Canada, on Feb. 7, 2022. Free masks and rapid tests were available to UBC students on Monday as most in-person learning returned after a delayed start due to the Omicron variant of COVID-19. (Photo by Liang Sen/Xinhua)
