我又不懂了,加拿大不是和美国一样到目前只批准了辉瑞和莫德纳吗?
提前买了J&J,牛津?不会买俄国、中国、印度的吧?
加拿大人口也用不了四亿疫苗吧?
To make good on that promise, Canada says it has purchased nearly 400 million doses from seven vaccine manufacturers. To date only the Pfizer-BioNTech and Moderna vaccines have been authorized for use in Canada.