A United Nations expert says he has found strong evidence linking at least 15 deaths and thousands of sick people to waste dumped by a ship in Ivory Coast in 2006. But Trafigura, the international commodities trader that chartered the ship, repeatedly denies any wrongdoing and says the UN report is "deeply flawed"…The report said thousands of local residents visited health centres complaining of nausea, headaches, vomiting, abdominal pains, skin, throat, lung and gastric problems the next day.