Secretary of State Rex Tillerson has ordered a brand new inquiry into well being issues suffered by diplomats serving on the US embassy within the Cuban capital Havana.
President Donald Trump has beforehand blamed the Cuban authorities for the thriller diseases.
Studies recommend sonic assaults had been accountable however nothing has been confirmed.
Cuba says there have been no sonic assaults in opposition to US embassy employees in Havana.
It describes the allegations as a “political manipulation” aimed toward damaging bilateral relations.
Over a interval of 18 months, 24 People together with diplomats and members of the family suffered a spread of signs together with listening to loss, dizziness, fatigue, cognitive points and sleep loss.
The issues had been so prevalent the US determined to drag out most of its employees within the autumn, leaving only a skeleton operation.
America expelled 15 Cuban diplomats, saying that Havana had failed to guard its staff, however Cuba stated the transfer was “unjustified”.
The US authorities additionally suspended visa processing in Cuba indefinitely.
Thus far, investigators have been unable to pinpoint the reason for the diseases.
BBC Washington correspondent Gary O’Donoghue says this contemporary inquiry – on high of investigations being carried out by companies such because the FBI – is more likely to pressure relations much more following President Trump’s determination to again away from the coverage of rapprochement begun by his predecessor.
Final yr, Cuban International Minister Bruno Rodriguez dismissed allegations of any form of assault on US embassy employees as “completely false”.
At the very least one Canadian has skilled comparable signs.
Late 2016: US embassy employees and a minimum of one Canadian start to note signs
Might 2017: US expels two Cuban diplomats for Cuba failing to guard its diplomats
August: US says 16 staff have been handled however assaults appear to have stopped. A Canadian diplomat in Havana is handled for listening to loss
Early September: US says assaults are persevering with and 19 employees members have now been damage
29 September: Washington pulls out diplomatic employees, warns US residents to not go to and says 21 embassy staff now injured
three October: US expels Cuban diplomats from Washington