Non-vaccinated residents could be blocked from entering the US – even if they need urgent medical treatment, it has been revealed.

Kim Wilson, the health minister, issued the stark warning at a press conference last night.

The minister pointed out that the US had introduced the tough safety measure – but that there were no guidelines on whether unvaccinated people travelling for medical treatment would be exempt from the ban.

Ms Wilson said: “There has been no development on how those that require medical care in the United States will be treated.

“Therefore I encourage those who are not vaccinated to start to consider their options if the United States determines that exemptions will not apply for unvaccinated persons with medical needs.”