New Report Assesses Illnesses Among U.S. Government Personnel and Their Families at Overseas Embassies

From National Academies.org (Dec. 5):

WASHINGTON — Government personnel and their families at the U.S. embassy in Havana, Cuba, in late 2016, and later at the U.S. consulate in Guangzhou, China, began suffering from a range of unusual — and in some cases suddenly occurring — symptoms such as a perceived loud noise, ear pain, intense head pressure or vibration, dizziness, visual problems, and cognitive difficulties, and many still continue to experience these or other health problems.  As part of its effort to ascertain potential causes of the illnesses, inform government employees more effectively about health risks at posts abroad, and determine best medical practices for screening, prevention, and treatment for both short- and long-term health problems, the U.S. Department of State asked the National Academies of Sciences, Engineering, and Medicine to provide advice.  After undergoing a security review, the National Academies’ report is now available.

In examining plausible causes of these illnesses, the committee that conducted the study and wrote the report considered the possibilities of directed, pulsed radio frequency energy, chemical exposures, infectious diseases such as Zika, and psychological issues.  An Assessment of Illness in U.S. Government Employees and Their Families at Overseas Embassies says that among the mechanisms the committee considered, directed, pulsed radio frequency energy appears to be the most plausible mechanism in explaining these cases, especially in individuals with the distinct early symptoms.  Persistent postural-perceptual dizziness (PPPD) — a functional (not psychiatric) vestibular disorder that may be triggered by vestibular, neurologic, or other medical and psychological conditions — is a secondary reinforcing mechanism, as well as the possible additive effects of psychological conditions. 

The committee could not rule out other possible mechanisms and found it is likely that a multiplicity of factors explains some cases and the differences between others.  In particular, it could not be certain that the individuals with only the chronic set of signs and symptoms suffered from the same causes and mechanisms as those who reported the initial, sudden onset set of signs and symptoms.  The committee noted that it faced several challenges in its assessment, related to the extreme variability in the clinical cases as well as lack of access to specific health or personal information on the affected individuals. [read more]