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They advised people to contact their emirate's nearest vaccination centre for further details.
Authorities recently reminded people that to maintain the Green Pass on the Al Hosn app, they must be fully vaccinated and have had a booster jab, as well as have a negative PCR result from the past two weeks.
Al Hosn's Green Pass allows people to access most public places in Abu Dhabi and cross the border into the emirate from Dubai.
If you cannot fulfil the criteria for the Green Pass, frequent negative PCR results also permit you entry to Abu Dhabi and public places in the capital.