Looking at the news cycle, Havana syndrome is having another moment in the limelight. Maybe it is like flesh-eating disease - case numbers remain relatively stable year on year but every now and then the media picks up on it, starts feeding on itself and then mass reports it like it is a new thing come to get us all.
As it happens, a scientific report (not clear if it has been peer-reviewed and officially published yet) and a literature review have just been released too (March 2024) if anyone is interested.
NIH studies find severe symptoms of “Havana Syndrome,” but no evidence of MRI-detectable brain injury or biological abnormalities
“Havana Syndrome”: A post mortem