18 hospitalized in Brussels school CO poisoning; children tested

A carbon monoxide leak at Institut Saint-Jean-Baptiste de La Salle in Saint-Gilles, Brussels, hospitalized 18 people, including one adult, on Tuesday. Initial reports cited one adult and three children poisoned; subsequent testing expanded the count. Authorities are screening at-risk children and have alerted parents, but the source of the leak and full exposure extent remain under investigation.