The rapid spread of “super malaria” in South East Asia is an alarming global threat, scientists are warning.
This dangerous form of the malaria parasite cannot be killed with the main anti-malaria drugs.
It emerged in Cambodia but has since spread through parts of Thailand, Laos and has arrived in southern Vietnam.
The team at the Oxford Tropical Medicine Research Unit in Bangkok said there was a real danger of malaria becoming untreatable.
Prof Arjen Dondorp, the head of the unit, told the BBC News website: “We think it is a serious threat.