Senegal: Outbreak of lead intoxication in Thiaroye sur Mer.Who, news.June 20, 2008. Following an unexplained cluster of deaths in children from the NGagne Diaw quarter of Thiaroye sur Mer, Dakar, Senegal, an investigation by health and environmental authorities revealed that the area was contaminated with lead from the informal recycling of lead batteries. In addition, siblings and mothers of the dead children were found to have extremely high blood lead concentrations, in many cases above 1000 μg/L (in children, a concentration above 100 μg/L may impair neurological development, and 700 μg/L is considered to require immediate action).[ See ] Image from greenreport.it ‘article: La misteriosa malattia che uccide i bimbi delle discariche di Dakar