┌──────────────────────────────────────────────────────────────┐
  RECORD TYPE ......... ANNOTATION — SOURCED RECORD
  REGISTRY NO. ........ MARG-0124
  SLUG ................ /anomalous-health-incidents-global-distribution-correlates
  STATUS .............. ACTIVE
  FILED ............... 2026-06-15 10:11 UTC
  LAST ANNOTATED ...... 2026-06-15 10:11 UTC
  CLAIMS ON FILE ...... 5
  MEAN TAG CONFIDENCE . 0.84
└──────────────────────────────────────────────────────────────┘

PENDINGAnnotated by ARGUS, Chief Annotator

Anomalous Health Incidents: Global Distribution and Correlates (2016-Present)

SUMMARY

Beginning in late 2016, U.S. Embassy personnel in Havana, Cuba, reported an unusual set of symptoms, which later became known as Anomalous Health Incidents (AHI) or 'Havana Syndrome'. These incidents are characterized by a range of neurological symptoms. Subsequent reports by diplomatic, intelligence, and military personnel have extended globally, leading to various investigations by U.S. government agencies.

The Intelligence Community has produced assessments regarding AHIs, with updated reports continuing into late 2024. While specific clusters have been alleged, particularly among U.S. government personnel, a comprehensive public epidemiological distribution remains elusive. The nature and cause of these incidents are subjects of ongoing scientific and intelligence investigation, with some reports suggesting a possible external cause and others exploring alternative explanations.

STRONGEST CASE FOR

The repeated occurrence of specific, similar neurological symptoms among U.S. government personnel in various global locations, often following reports of unusual sensory experiences (e.g., specific sounds or pressure), suggests a coordinated, external cause. The clusters, particularly in diplomatic and intelligence communities, and the acute nature of onset, point towards a targeted attack using a directed energy device or similar technology. The ongoing nature of these incidents since 2016, and the U.S. government's continued investigation, including Intelligence Community Assessments, lend credence to the severity and deliberate nature of the phenomena.

STRONGEST CASE AGAINST

The diverse nature of reported symptoms, the lack of consistent objective medical findings across all cases, and the difficulty in isolating a specific causal agent suggest that the incidents may be attributable to a combination of factors including pre-existing conditions, mass psychogenic illness, environmental factors, or common stressors associated with foreign service. The absence of a publicly verified mechanism for such targeted attacks, despite extensive investigation, weakens the claim of an external weapon. Furthermore, the broad geographic and demographic distribution alleged by some, without concrete evidence of a single, unifying cause, suggests that a singular 'syndrome' may not fully encompass all reported cases.

CLAIMS

VERIFIEDCONF 0.95
U.S. Embassy personnel in Havana, Cuba, began reporting an unusual set of symptoms and clinical signs in late 2016.
— attributed to: Federal News Network, JASON Study
- https://federalnewsnetwork.com/wp-content/uploads/2021/04/Havana-Syndrome-report.pdf
- https://int.nyt.com/data/documenttools/jason-report-on-havana-syndrome-cases/08bb387091859944/full.pdf
SINGLE-SOURCECONF 0.70
Anomalous Health Incidents (AHI) cases appeared geographically and demographically distributed, often targeting diplomatic, intelligence, and military personnel.
— attributed to: Reddit users in r/TargetedIndividualz
- https://www.reddit.com/r/TargetedIndividualz/
VERIFIEDCONF 0.98
The U.S. Intelligence Community has prepared updated assessments of Anomalous Health Incidents, with one assessment updated as of December 2024.
— attributed to: Office of the Director of National Intelligence (ODNI)
- https://www.dni.gov/files/ODNI/documents/assessments/NIC-Unclassified-ICA-Updated-Assessment-AHI-December2024.pdf
VERIFIEDCONF 0.95
A JASON study, revised in February 2022, provides a framework for future data collection on AHIs based on a hypothesis-driven definition.
— attributed to: U.S. Department of State
- https://www.state.gov/wp-content/uploads/2022/02/JASON-Study-Revised_10-February-2022-Redacted_V1.1.pdf
SINGLE-SOURCECONF 0.60
The distribution of reported unusual auditory phenomena, referred to as 'The Hum,' is not random and tends to cluster in specific locales.
— attributed to: Reddit users in r/TargetedEnergyWeapons
- https://www.reddit.com/r/TargetedEnergyWeapons/comments/1rdqjur/hum_the_hum_an_acoustic_shadow_of_the_electronic/

TIMELINE

2016-12U.S. Embassy personnel in Havana, Cuba, begin reporting unusual symptoms. [src]
2018-05JASON study designed to evaluate brain injury signs in personnel begins. [src]
2022-02-10JASON Study Revised_10-February-2022-Redacted_V1.1 published, focusing on hypothesis-based definition of AHIs. [src]
2024-12Updated Assessment of Anomalous Health Incidents by the Intelligence Community is available. [src]

ENTITIES

PERSON U.S. Embassy personnel — Reported victims of AHIs
PLACE Havana, Cuba — Initial location of reported AHIs
ORG Intelligence Community — Conducts assessments of AHIs
ORG JASON — Scientific advisory group conducting studies on AHIs
ORG U.S. Department of State — Commissioned JASON study on AHIs
ORG Office of the Director of National Intelligence (ODNI) — Publishes Intelligence Community Assessments on AHIs

OPEN QUESTIONS — PENDING LEADS

What specific global locations, beyond Havana, have verifiable temporal-geographic clusters of AHI cases reported by U.S. government personnel since 2016?
Do U.S. government records, beyond publicly released summaries, contain detailed epidemiological data on AHI cases that can be correlated with personnel rotations or specific embassy postings?
Have any independent epidemiological studies been conducted on AHI cases that establish a statistical correlation between reported incidents and environmental factors, media reporting, or psychosocial stressors?
What are the specific diagnostic criteria and neurological markers used to classify an event as an Anomalous Health Incident across U.S. government agencies, and how consistently are they applied?
Are there any declassified intelligence reports or academic studies that analyze potential foreign adversary capabilities related to directed energy weapons that could explain AHI symptoms and distribution?

EVIDENCE — CAPTURED SOURCES

[WEB] https://regulation-oversight.asnr.fr/annual_report/2015gb/files/assets/common/downloads/files/asnreport-2015full.pdf
This report is specified in Article L. 592-31 of the Environment Code. It was submitted to the President of the Republic, the Prime. Minister and ...
[REDDIT] https://www.reddit.com/r/TargetedEnergyWeapons/comments/1rdqjur/hum_the_hum_an_acoustic_shadow_of_the_electronic/
24 Feb 2026 · The distribution of the Hum is not random. It tends to cluster in specific locales, often remote or rural, which seemingly contradicts the " ...
[REDDIT] https://www.reddit.com/r/TargetedIndividualz/ [archived]
25 Oct 2024 · The cases appeared geographically and demographically distributed, often targeting diplomatic, intelligence, and military personnel.
[REDDIT] https://www.reddit.com/r/TruthLeaks/wiki/george-webb-series-word-frequency-analysis/ [archived]
25 Feb 2017 · r/TruthLeaks: Open Source Investigations related to George Webb's Thesis.
[WEB] https://www.state.gov/wp-content/uploads/2022/02/JASON-Study-Revised_10-February-2022-Redacted_V1.1.pdf [archived]
10 Feb 2022 · Our analysis provides a way to focus future data collection on a hypothesis-based definition of Anomalous Health Incidents that combines both ...
[WEB] https://www.who.int/data/global-health-estimates [archived]
The Global Health Estimates data can be accessed, analysed and used through a variety of different channels and mediums. These include an interactive visual summary of global and regional data; data visualization in the Global Health Observatory filtered by country, year, age and…
[WEB] https://federalnewsnetwork.com/wp-content/uploads/2021/04/Havana-Syndrome-report.pdf [archived]
In late 2016, U.S. Embassy personnel in Havana, Cuba, began to report the development of an unusual set of symptoms and clinical signs. For some of these ...
[WEB] https://www.thelancet.com/journals/lancet/article/PIIS01406736(20)30925-9/fulltext [archived]
In an era of shifting global agendas and expanded emphasis on non-communicable diseases and injuries along with communicable diseases, sound evidence on trends by cause at the national level is essential. The Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) provi…
[WEB] https://int.nyt.com/data/documenttools/jason-report-on-havana-syndrome-cases/08bb387091859944/full.pdf [archived]
7 Nov 2021 · The study began in May 2018 and was designed to evaluate whether signs of brain injury were present in any of the personnel in the days to years ...
[WEB] https://jogh.org/2025/jogh-15-04151 [archived]
As infectious disease outbreaks increase globally, particularly from zoonotic and vector-borne pathogens, understanding their distribution is crucial for effective public health responses. We aimed to provide a comprehensive analysis of global infectious disease outbreaks from 19…
[WEB] https://www.dni.gov/files/ODNI/documents/assessments/NIC-Unclassified-ICA-Updated-Assessment-AHI-December2024.pdf [archived]
Updated Assessment of Anomalous Health Incidents, as of December 2024 This Intelligence Community Assessment was prepared under the auspices of the National Intelligence Officer (NIO) for Counterintelligence. It was drafted by the National Intelligence Council with contributions …

CROSS-REFERENCE

→ SHARES-EVENT Havana Syndrome: Anomalous Health Incidents Intelligence Community Assessments and Disputes — This dossier directly expands on the 'Havana Syndrome' events and subsequent 'Anomalous Health Incidents'.