US Vice-President Kamala Harris’s flight to Vietnam was delayed by several hours due to an “anomalous health incident” with similarities to so-called Havana syndrome, reports say.
The mysterious syndrome first affected people at the US and Canadian embassies in Havana in 2016 and 2017. It may be caused by directed microwave radiation.
Ms Harris was in Singapore ahead of her visit to Vietnam at the time of the incident in Hanoi.
It is unclear who was affected.
The US Embassy in Hanoi issued a statement blaming “a recent possible anomalous health incident” there for the three-hour delay of Harris’ flight.
An “anomalous health incident” is a term the US government has used to describe so-called “Havana Syndrome” — a mysterious condition that includes dizziness, nausea, migraines and memory lapses and is sometimes preceded by a piercing sound.
The condition got its name from a rash of health incidents first reported by American officials in Havana, Cuba, starting in 2016 and 2017.
Press secretary Jen Psaki told a White House press briefing later that US officials “take any reported incident of Havana syndrome seriously”.
US officials had not yet confirmed the latest reported case, and it did not involve anyone travelling with Harris, Psaki said. In light of the reports, “there was an assessment done of the safety of the vice-president, and there was a decision made that she could continue travel along with her staff”, she said.
As Harris’s trip to Vietnam was delayed, Vietnamese Prime Minister Pham Minh Chinh held the unannounced meeting with Chinese Ambassador Xiong Bo, during which Chinh said Vietnam does not align itself with one country against any other.
Earlier on Tuesday, Harris had accused Beijing of coercion and intimidation to back claims in the South China Sea, her most pointed comments on China during a visit to Southeast Asia, a region she said is critical to US security.
“The Prime Minister affirmed that Vietnam adheres to an independent, self-reliant, multilateral, and diverse foreign policy and is a responsible member of the international community,” the Vietnamese government said in a statement.
“Vietnam does not align itself with one country against another,” it said.
Territorial disputes in the South China Sea should be settled according to international law and “high-level common sense,” it said.
The US administration has called rivalry with China “the biggest geopolitical test” of the century.
“The fact that China’s ambassador insisted on a meeting with the Vietnamese prime minister shortly before Harris landed shows how anxious Beijing is that its communist neighbor may tilt toward the US,” said Murray Hiebert, a Southeast Asia expert at Washington’s Center for Strategic and International Studies.
During the meeting, Chinh thanked the ambassador for the vaccine donation. It was not immediately clear which vaccine China had donated.
Vietnam had successfully contained the coronavirus for most of last year but since April has been dealing with a large COVID-19 outbreak in Ho Chi Minh City, driven by the highly contagious Delta variant of the virus. Just under 2% of its 98 million people are fully vaccinated.
