Washington: An expanded health alert has been issued by the US State Department for China after reports that some US diplomats in the country were hit by a mystery illness.
According to reports, the US diplomats in China experienced a mysterious malady that resembles a brain injury and has already affected US personnel in Cuba.
In May, a statement had only mentioned the southern Chinese city of Guangzhou as the location for the health alert and it was sent to US citizens throughout the country.
The State Department had earlier confirmed that a US employee in the consulate in Guangzhou had "suffered a medical incident". It had also said that a team was deployed to screen employees and their family members.
"The State Department received medical confirmation that a US government employee in China suffered a medical incident consistent with what other US government personnel experienced in Havana, Cuba," the statement said, reiterating comments made last month by Secretary of State Mike Pompeo.
It warned of "unexplained physical symptoms or events, auditory or sensory phenomena", and said symptoms of the ailment included dizziness, headaches, tinnitus, fatigue, cognitive issues, visual problems, ear complaints and hearing loss, as well as difficulty sleeping.
China says it has thoroughly investigated the initial case and found no reasons or clues to explain it.
"Practically all Chinese people do not believe that this country's official organisations would carry out such sonic attacks against US diplomats. This does not fit with China's basic concept and principles of diplomacy, and is inconceivable," the Global Times said in an editorial.