The official advice from the FCDO in this scenario is that if you are able to leave, you should do so.
We will work with your local host to facilitate this as soon as possible and keep you and your emergency contacts informed of the situation.
All expenses for alternative travel, testing, treatment or self-isolation will need to be covered by you. It is important that you have travel insurance that covers such costs incurred due to Covid-19.
With respect to your booking, in extraordinary circumstances like these where your trip has to be curtailed, we will treat your booking as if it were cancelled, and work out an offer of credit towards a new trip, or partial refund based on the proportion of the trip that was cancelled. See ‘what happens if my trip is cancelled’.
You should also contact your travel insurance provider to confirm your options.