Thousands who fled the advance of M23 rebels now face the threat of disease and shortages in Burundi’s overcrowded refugee camps Thousands who fled the advance of M23 rebels now face the threat of disease and shortages in Burundi’s overcrowded refugee camps I t must have been an eerie sight when 35-year-old Diudonné Muka looked over his shoulder and saw a trail of people stretching as far as the eye could see. The line ebbed and flowed deep into the surrounding forest, a river of multicoloured