An article which was published recently in the Globe and Mail describes the adverse effects that toxic mould in buildings has had on the health of teachers and students in several Canadian schools. Symptoms experienced included itchy red skin rashes, hives, congestion, bloody noses, coughing attacks and respiratory problems. 

In some cases, health problems were experienced over an extended period of time, during which mould was repeatedly found, removed from, then found again in classrooms. In one case, a substantial mould infestation was found on the soil beneath classrooms.

The full story can be found at http://www.emfacts.com/weblog/?p=906