There was a late-morning scare for students and teachers at a LaSalle elementary school.
Officials with Urgences-Santé now say 43 people — 35 children and eight adults — at the École des Découvreurs, near the corner of 39th and 35th Aves., were sent to hospital after they were overcome by carbon monoxide.
Officials say at around 11:30 a.m., many of them began to feel nauseous and dizzy. Some were vomiting.
Students and staff who weren't affected by the leak were evacuated to the nearby Notre-Dame des Rapides school.
The gas appears to have come from a faulty heating system. School officials say there will be no classes at the school on Tuesday, while crews try to sort out the problem.
By early Monday afternoon, the Montreal Children's Hospital was in what's called a Code Orange, which means they expected large numbers of patients to arrive for treatment at the same time. As a result, they also urged parents to keep their children away from the emergency room if at all possible.
The hospital announced it was lifting the Code Orange at around 4:30 p.m. on Monday. At that time, one patient was being held at the Children's for observation, 10 others had been sent to Sacré-Coeur Hospital for special hyperbaric oxygen treatment, and two others were discharged.
Hospital officials say everyone is stable, and expect everyone to be released healthy "very shortly".
They say a faulty heating system is what caused the carbon monoxide leak. Firefighters now ventilating the school. Workers will be in later to repair the heating system. Students were evacuated to a nearby school and an aquatics center, where parents are picking them up. #CJAD800 pic.twitter.com/v1O4TrFlZb
— Saif Kaisar (@StaySaif) January 14, 2019