The suspected cases come about a week before Secretary of State Antony Blinkenâs planned visit to Bogotá.
At least five families with links to staff were afflicted in recent weeks, with one of them leaving the country for treatment, according to the Wall Street Journal, which first reported the cases.
The State Department said in a statement to The Washington Post that it âvigorouslyâ investigated reports of such incidents wherever they were reported, including âwhether they may be attributed to a foreign actor.â
âDue to privacy concerns and for security reasons, we do not discuss specific reports or Embassy operations, but we take each report we receive extremely seriously.â
The exact origins of the illness remain unknown, though its name dates back to 2016 to when it first appeared to hit CIA officers and Canadian personnel in Cubaâs capital, Havana. The initial cluster confounded medics, with victims reporting the sudden onset of a range of symptoms such as headaches, nausea and memory loss. Brain scans later showed tissue damage usually seen in patients with concussions after a blast or car accident.
Signs of it have since popped up in Russia, China, Colombia, Uzbekistan and the United States. German police confirmed last week that the country was looking into an âalleged sonic attackâ targeting U.S. Embassy staff in Berlin, who are among roughly 200 cases to grip U.S. diplomats and intelligence officers around the world.
President Biden has just signed legislation to give financial aid for brain injuries to victims of the âHavana Syndrome,â pledging on Friday to âget to the bottom of these incidents.â
The bill comes after symptoms consistent with the illness showed up last month in the team of CIA Director William J. Burns, who tasked a top agency official this summer with leading the investigation into the mysterious illness.
In another sign of growing attention the illness is attracting, the spy agency removed its station chief in Vienna after criticism of the response to purported cases at the U.S. Embassy in Austria.
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