REUTERS, Lahore

Authorities in Pakistan have ordered enhanced screening of people entering the country for signs of infections of the deadly Nipah virus after India confirmed two cases, adding to the number of Asian countries stepping up controls.

Thailand, Singapore, Hong Kong, Malaysia, Indonesia and Vietnam have also tightened screening at airports. But an Indian official said there were no plans to introduce screening at the country’s airports and said there was no sign of any outbreak.

The Nipah virus can cause fever and brain inflammation and has a high mortality rate. There is also no vaccine. But transmission from person to person is not easy and typically requires prolonged contact with an infected individual.

“It has become imperative to strengthen preventative and surveillance measures at Pakistan’s borders,” the Border Health Services department said.

“All travelers shall undergo thermal screening and clinical assessment at the Point of Entry,” which includes seaports, land borders and airports, the department added.