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Are Covid-19 restrictions over? Can somebody apply for tourism visitor visa at the moment?

Only if you are fully vaccinated with Pfizer, Moderna, J&J or AZ. There are some exception for some family members.
 
Thank you! So you should be fully vaccinated before applying for visa or after?

It can be after but you must get vaccinated plus have a 2 week time period after your last shot so it would make sense to start the vaccination process.