The first reports of the mysterious sound came 2016. Then had a number of diplomats at the us embassy in Cuba’s capital are ill with nausea, dizziness and loss of hearing which most likely had been caused by a mysterious sound. Other symptoms reported include confusion, memory problems and reduced brain power.

similar reports from the Canadian embassy and in June 2018, it stated the same thing, even among the american embassy staff in China.

In september of 2017 decided the united states to call home the greater part of their diplomats and their relatives from Havana, however, did not Canada.

Now announcing, however, the canadian department of foreign affairs that even an illness has occurred and therefore cut down its embassy staff in Cuba by half, writes the AP. A total of 14 people at the embassy affected by the suspected ljudattacker. The united states has 26 confirmed cases.

the government, the person must have arrived to Havana in the summer and fell ill in december. It shows that the danger of the mysterious ljudattackerna is not over, the government says.

the united states has made several inquiries about what is behind the mysterious sound that leads to that people become ill but to be able to accurately clarify the cause. Recordings of the sounds, as some of the american diplomats made, have been analysed by researchers with different results. Some argue that it is Anurogryllus celerinictus-crickets, the other to the case of ljudvapen or a kind of mikrovågsvapen used in a kind of psychological warfare . Virus or mass hysteria have also been proposed.

The american federal police the FBI noted in a report that it found no evidence that the diplomats even have been a victim of a ljudvapen.

Canada says that they do not have any information about what may have caused the health problems, reports the AP.

in Canada, Josefina Vidal, writing in a statement that her government believes that the move is ”incomprehensible”, but that it intends to maintain the good bilateral relations with Canada, according to the AP.

Cuba has consistently denied any involvement in the events.