Update 2021-10-06 (2): Contrary to earlier reports, the requirement for air, rail and marine travellers to be fully vaccinated will already apply from 30 October. However, there will be a transition period, in which a negative COVID-19 test, no older than 72 hours, will also be accepted. From 30 November, all travellers must be fully vaccinated. Only a few exceptions will apply Canada.ca
Update 2021-10-06 (1): According to media reports from Wednesday (06 October), all air and rail travellers will have to be fully vaccinated by the end of November. However, the details of this vaccine mandate are still being worked on.