What causes Havana Syndrome?

Officials investigate outbreak of cases at US embassy in Colombia

Cases were first reported at the US embassy in Cuba
Cases were first reported at the US embassy in Cuba
(Image credit: YAMIL LAGE/AFP via Getty Images)

US embassy staff in the Colombian capital Bogota have reported symptoms consistent with the unexplained condition known as Havana Syndrome, which has struck down American officials in government buildings around the world.

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