一名情报官员告诉美国广播公司新闻，美国情报界启动了一个新的专家小组，汇集了高级官员和外部医学和科学专家，调查影响全球数十名美国人员的“异常健康事件”。
在美国驻古巴大使馆报告第一批病例后，美国政府仍未对这些事件的原因得出结论，这些事件有时被称为“哈瓦那综合症”。
但据美国国务院称，奥地利首都维也纳的大使馆目前正在调查更多报告的病例。美国国务院发言人周一表示，正在“积极调查”那里的美国人员中可能出现的不明原因健康事件的报告。
奥地利只是最近报道事件的国家。白宫新闻秘书珍·普萨基(Jen Psaki)周一表示，国家安全委员会正在监督一项政府范围的审查，“以确定是否有以前未报告的事件符合更广泛的模式”，以及“它们是否构成外国行为者的某种攻击。”
一名情报官员告诉美国广播公司新闻，除了这一审查之外，情报界还在本月早些时候成立了新的专家小组，汇集了中央情报局、国家情报总监办公室的高级官员以及外部科学和医学专家，以探索导致“健康事件”的多种假设。
这是联邦政府对一个自2016年古巴报告首例病例以来一直困扰官员的问题的最新审查，突显出美国官员对此知之甚少。
据这位官员称，新的小组将建立在美国国家科学院、工程和医学研究院去年12月的一份报告的发现基础上，该报告的结论是，“定向脉冲射频能量似乎是解释这些病例的最合理机制，尤其是在早期症状明显的个体中。”
数十名美国官员被诊断出受伤，包括创伤性脑损伤，此前他们报告了奇怪的经历，如高音或压力或振动感，或衰弱症状，包括头痛、恶心、认知缺陷以及视觉、听觉或平衡障碍。
在奥地利之前，美国政府已经在公开或解密文件中承认了古巴、中国、乌兹别克斯坦、俄罗斯和美国报告的病例，尽管白宫表示“绝大多数”病例是在海外报告的。
参议院情报委员会的民主党和共和党高层在5月份警告说，“攻击为我们政府服务的同胞的模式似乎在增加。”
美国国务院发言人内德·普莱斯(Ned Price)周一在维也纳表示:“与我们的机构间合作伙伴协调，我们正在积极调查关于美国驻维也纳大使馆社区可能发生不明原因健康事件的报告”。
该机构拒绝提供更多细节，包括受影响人员的数量。但据最先报道维也纳集群的《纽约客》杂志称，该集群共有大约24名美国外交官、情报官员和其他政府官员，目前仅次于哈瓦那。
一名中情局发言人告诉美国广播公司新闻，局长比尔·伯恩斯“亲自与受异常健康事件影响的人员接触，并高度致力于他们的护理和确定这些事件的原因”，但拒绝提供更多细节。
中央情报局和国务院都提升了内部工作队，调查其人员中报告的事件，而国务院有自己的医疗专家团队，对世界各地报告的事件做出反应。
US intelligence community convenes new panel to probe 'Havana syndrome' causes amid new cases in Austria
The U.S. intelligence community has launched a new panel of experts that brings together senior officers and outside medical and scientific experts to investigate the "anomalous health incidents" affecting dozens of U.S. personnel around the world, an intelligence official told ABC News.
The U.S. government still has not reached a conclusion into the cause of the incidents, sometimes known as "Havana syndrome" after the first cluster of cases was reported at the U.S. embassy in Cuba.
But more reported cases are now being investigated at the embassy in Austria's capital, Vienna, according to the State Department, whose spokesperson said Monday that it is "vigorously investigating reports of possible unexplained health incidents" among U.S. personnel there.
Austria is just the latest country where incidents have now been reported. The National Security Council is overseeing a government-wide review "to ascertain whether there may be previously unreported incidents that fit a broader pattern," White House press secretary Jen Psaki said Monday, and "whether they constitute an attack of some kind by a foreign actor."
Beyond that review, the intelligence community also established the new panel of experts earlier this month -- bringing together senior officers from the CIA, the Office of the Director of National Intelligence and outside scientific and medical experts -- to explore the multiple hypotheses into what is causing the "health incidents," an intelligence official told ABC News.
It's the latest federal government review into an issue that has vexed officials since 2016 when the first cases were reported in Cuba, underscoring how little U.S. officials still know about it.
The new panel will build off of the findings of a report by the National Academies of Sciences, Engineering and Medicine last December, according to the official, which concluded that "directed, pulsed radio frequency energy appears to be the most plausible mechanism in explaining these cases, especially in individuals with the distinct early symptoms."
Dozens of U.S. officials have been diagnosed with injuries, including traumatic brain injuries, after reporting strange experiences like high-pitched sounds or feelings of pressure or vibration, or debilitating symptoms including headaches, nausea, cognitive deficits, and trouble with seeing, hearing, or balancing.
Before Austria, the U.S. government had acknowledged, in public or in declassified documents, reported cases in Cuba, China, Uzbekistan, Russia, and the United States, although the White House has said "the vast majority" of cases have been reported overseas.
The top Democrat and Republican on the Senate Intelligence Committee warned in May that the "pattern of attacking our fellow citizens serving our government appears to be increasing."
"In coordination with our interagency partners, we are vigorously investigating reports of possible unexplained health incidents among the U.S. embassy community there" in Vienna, State Department spokesperson Ned Price said Monday.
The agency has declined to provide more details, including the number of affected personnel. But according to The New Yorker magazine, which first reported on the Vienna cluster, it totals around two dozen U.S. diplomats, intelligence officers and other government officials -- now second only to Havana.
A CIA spokesperson told ABC News that director Bill Burns "is personally engaged with personnel affected by anomalous health incidents and is highly committed to their care and to determining the cause of these incidents" but declined to provide more details.
Both the CIA and the State Department have elevated their internal task forces investigating reported incidents among their personnel, while the State Department has its own team of medical experts that responds to reported incidents around the world.
