UK too…
https://www.theguardian.com/world/2021/jan/02/england-health-officials-defend-contingency-plan-to-mix-covid-vaccines
>Officials have defended England’s vaccine regimen after details of a contingency plan to mix the two approved jabs in a small number of cases emerged.
> “Every effort should be made to give them the same vaccine, but where this is not possible it is better to give a second dose of another vaccine than not at all.”