Canada will cut its embassy staff in Cuba by up to half after a mystery illness affected another person there, authorities in Ottawa have said, BBC reports.
Medical testing after the reappearance of unusual symptoms in November saw a 14th Canadian affected.
Canada's foreign office said the number of staff will now be cut by up to half as a result.
US staff have also been affected by the illness, which causes dizziness, nausea and difficulty concentrating.
Canada has discounted the idea of a "sonic attack" being the cause - a theory previously put forward by the US state department last year.