On Thursday (2 December), the White House confirmed it would reduce its pre-departure testing window from 72 hours to 24 hours, with the change set to come into effect "early next week".
In effect, it means all visitors to the US – vaccinated and unvaccinated – will have to test negative for Covid-19 at most a day before their travel.
Additionally, the administration has extended its requirement for travellers to wear masks on aircraft, trains and other forms of public transport through to mid-March 2022.
