US Issues New Alert Over Mystery Guangzhou Ailment

The US Embassy in China has sent its second alert in two weeks to its citizens over unexplained health issues that have prompted the evacuation of a number of US government employees working at its consulate in Guangzhou.

Friday's alert urged Americans to seek medical help in the event they suffered any "unusual, unexplained physical symptoms or events, auditory or sensory phenomena, or other health concerns".

The alert comes as a US medical team is screening more Americans who work at the Guangzhou consulate. A previous case there, disclosed last month, prompted the tests.

The incidents have raised fears the unexplained issues that started in Cuba in 2016 have expanded to other countries.

The foreign ministry in Beijing said on Thursday that its investigation into the first case has not yielded any clues as to the cause of the incident. (AP)