Page 1 of Havana Syndrome
This is freaky, the sort of thing bandi would be extrapolating way beyond where it should logically be:
Havana syndrome first emerged in Cuba in 2016. The first cases were CIA officers, which meant they were kept secret. But, eventually, word got out and anxiety spread. Twenty-six personnel and family members would report a wide variety of symptoms. There were whispers that some colleagues thought sufferers were crazy and it was "all in the mind".
Five years on, reports now number in the hundreds and, the BBC has been told, span every continent, leaving a real impact on the US's ability to operate overseas.
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I remember this at the time and thinking it sounded odd but also potentially viable. Haven't thought about it at all until I followed your link and read the article...