Previous posts have discussed the recent emergence of a U.S.-Cuba diplomatic dispute over hearing problems of U.S. diplomats. Here is an update on that dispute.
The only news about the conditions of those affected was an August 23 report by CBS News, which had reviewed the medical records of certain U.S. diplomats who had been stationed in Cuba. CBS reported that their doctor had diagnosed them with conditions as serious as mild traumatic brain injury and damage to the central nervous system. The U.S. State Department, however, said that it did not yet have “definitive answers” on the source or cause of the incidents and that the investigation into these matters was “ongoing.” The Department also stated, “We remain in regular contact with the Cuban government to emphasize that we take these incidents very seriously and to resolve this matter in a satisfactory manner.”
Earlier, on August 11, Secretary of State Tillerson said that some of the U.S. diplomats stationed in Havana had been victims of “health attacks” that the U.S. has “not been able to determine who’s to blame” and that the U.S. held “the Cuban authorities responsible for finding out who is carrying out these health attacks on not just our diplomats but, as you’ve seen now, there are other cases with other diplomats [Canadians] involved.”
John Caulfield, the head of the U.S. Interests Section in Cuba from 2011 to 2014 said U.S. diplomats in Cuba are under 24-hour surveillance during their assignments. “Nobody does anything in Cuba without them knowing.” However, he added that such aggressive tactics largely stopped by late 2013 and 2014 as U.S. and Cuban officials secretly negotiated the diplomatic reopening announced in December 2014, after his departure from Havana. He believes that the likeliest explanation for the diplomats’ mysterious deafness was “a new surveillance technique gone bad that had consequences. I do not believe they would randomly cause harm to this variety of people.”
At least six of the affected U.S. diplomats were flown to the University of Miami Hospital where they received treatment and this August a Hospital specialist went to Havana to examine others who work at the embassy, because officials expect that more people were affected.
The State Department Press Briefing on August 23 touched on this dispute, but did not add any new information.
 U.S. and Cuba Have Diplomatic Dispute, dwkcommentaires (Aug. 10, 2017); Another State Department Briefing Regarding Cuban Diplomatic Dispute, dwkcommentaries (Aug. 10, 2017).
 Some U.S. diplomats in Cuba diagnosed with serious health conditions, medical records show, CBS News (Aug. 23, 2017); Reuters, Cuba ‘Incidents’ Caused Brain Injury, Nerve Damage to Diplomats: CBS News, N.Y. Times (Aug. 23, 2017).
 Assoc. Press, Tillerson Says Diplomats in Havana Suffered ‘Health Attacks,” N.Y. Times (Aug. 12, 2017).
 Robles & Semple, ‘Health Attacks’ on U.S. Diplomats in Cuba Baffle Both Countries, N.Y. Times (Aug. 11, 2017); Robles & Semple, Diplomats under ‘health attack in Cuba were treated by Miami doctors, Miami Herald (Aug. 13, 2017).