A survey by the independent Centre for Diagnosis and Alternatives for those Affected by Toxic Substances (Cedaat) reveals symptoms including headaches, eye irritation and sore throat among local residents. According to Cedaat, 86 per cent of 305 people examined showed signs of acute poisoning. Cedaat also documented serious memory and concentration losses among schoolchildren aged nine on average.
“We are dealing here with a complex problem,” said Arturo de Leon, a doctor at the National Autonomous University of Mexico, who led the investigation.