This happens in India[1,2] too, and rabies cases are sadly all too common there, so I applaud Bhutan for its success.
Are there any lessons for other countries in what Bhutan has achieved?
Eg for India a concern is: even with a real effort it’ll be difficult just given the size of the place and the routes available for other dogs to move in.
Then there’s massively underfunded local government and corruption to consider (and harder to fix). Charities do what they can but it’s a drop in the ocean.