Facing a nationwide surge in coronavirus cases fuelled by the spread of the highly transmissible omicron variant, Abu Dhabi is requiring people entering the city to show proof of booster shots.

The government’s health app said earlier this week that people entering the capital of the United Arab Emirates must show a “green pass,” confirming their vaccination status. The app says that visitors are no longer considered fully vaccinated unless they have received a booster at least six months after their second dose.