What you need to know about Nipah virus disease

On high alert: Quarantine doctors watching thermal scanning of travellers from West Bengal, India, at the Suvarnabhumi International Airport in Samut Prakarn, Thailand, on Sunday. — AP

In recent days, the authorities in countries such as Malaysia, Thailand and Vietnam have been on high alert after an outbreak of the deadly Nipah virus in the Indian state of West Bengal.

So far, no cases have been reported outside India, but health authorities across Asia are stepping up precautions.