That's an hypotesis just as many others. Investigators and medics who visited the patients say they don't know. Source : yesterday's arstechnica's article: http

That's an hypotesis just as many others. Investigators and medics who visited the patients say they don't know. Source : yesterday's arstechnica's article: https://arstechnica.com/science/2019/01/canada-halves-diplomatic-staff-in-cuba-after-another-mysterious-brain-injury/ https://arstechnica.com/science/2019/01/canada-halves-diplom...