[66fm472tjy7]

It is my understanding that a single dose of the Janssen vaccine is still recognized until 2021-01-02 [0]. After that, you need to have an additional dose of any EMA-approved vaccine.

I assume you would be able to get a booster off-label in the Netherlands.

[0] https://gruenerpass.gv.at/geimpft/ "03. Jänner 2022 ist das Impfzertifikat einer einmaligen Janssen Impfung nicht mehr gültig."

[leokennis]

Corona vaccination in the Netherlands has been pretty strictly “invite only”. I.e. once your age group had its turn, you got an invite to make an appointment to get the injection.

Currently no one in NL has gotten any booster yet. They hope to start 60+ somewhere beginning of December.

So as an example, come 03-01-2022, if you’re 30 and you have a Janssen shot and you want to go to Austria you’re out of luck. It’ll be months before you’re going to get the booster and you cannot “get it off label”.