A man receives the COVID-19 vaccine on a COVID-19 "vaccine bus" at Tsawwassen Ferry Terminal in Delta, British Columbia, Canada, on July 30, 2021. The "vaccine bus" is part of "Vax for B.C." campaign in British Columbia aimed at boosting up the vaccination rate. (Photo by Liang Sen/Xinhua)
Canada faces start of Delta-driven 4th wave of COVID-19, top doctor says
Source: Xinhua| 2021-07-31 07:00:42|Editor: huaxia