The mysterious condition known asHavana syndromecan be “ probably explain ” by the aim use of “ pulsed electromagnetic energy ” , allot to a partially declassifiedUS intelligence activity theme . First reported by American and Canadian diplomats   in the Cuban cap in 2016 , " Havana syndrome " consists of an array of strangeneurological symptomsand has led to debates over whether the illness could be due to some variety ofhuman - made gimmick .

A panel of intelligence biotic community experts with “ expertness in relevant domain of science , medicine , and engineering ” compile the report after psychoanalyse over 1,000 text file and interview affected somebody . They decide the symptom associate with the unwellness to be “ genuine and compelling ” , and noted that while some cases can be assign to bonk psychological or aesculapian factors , others stay on unexplained .

The writer seek to determine the feasibleness of five potential causal mechanism , including “ acoustic signals , chemical substance and biologic agent , ionizing radiation , natural and environmental broker , and radiofrequency and other electromagnetic energy . ” To specialise down the scope of the investigating , they appraise the potential of each of these mechanisms to account for cases of Havana syndrome that can not be easily explained by other substance .

More specifically , they looked at cases involving a combination of four especially puzzling “ core gadget characteristic . ” These include “ the intense attack of … sound or pressure in only one spike or on one side of the fountainhead , ” as well as vertigo , “ a strong sense of locality or directivity , ” and an absence of any obvious environmental or medical causes for such symptoms .

rule out the possibility that Havana syndrome could comprise an underlying brain disorder , the source submit that “ the compounding of the four nitty-gritty feature is clearly strange and unreported elsewhere in the medical literature , and so far have not been associated with a specific neurologic irregularity . ”

On the other hired man , they conclude that “ pulse electromagnetic energy , specially in the radiofrequency range , believably excuse the core equipment characteristic , ” although they do yield that such a theory is riddled with “ information gaps . ” address the possibility that Havana syndrome could therefore be cause by a nefarious twist , they go on to explain that gimmick do " survive that could generate the involve input , are concealable , and have moderate power requirements , " that could grow the observed symptoms .

For example , they reveal how , “ using nonstandard antenna and techniques , the sign could be spread with low-spirited passing through air travel for tens to hundreds of cadence , and with some loss , through most building materials . ” At the same meter , however , the authors point out that their report does not provide evidence for the use of goods and services of any such machine , nor does it address the egress of who may be behind any divinatory fire .

With the potential exception of ultrasound gadget , the report rule out the plausibleness of all other proposed causes . For instance , both ionizing radiation and chemical substance or biological broker be given to produce issue that are inconsistent with the symptoms of Havana syndrome .

Interestingly , these findings appear to contradict those of a recentCIA investigationwhich conclude that most character of the illness can be explained by natural crusade , and that claims of a targeted attack by any strange commonwealth are unsubstantiated .

In astatement , the authors of this latest report said that “ moving forwards , the work of the IC [ Intelligence Community ] Experts Panel will help focalise the piece of work of the IC and broader U.S. Government as we focalise on possible lawsuit .