Key Points

At the start of the 2024–2025 school year, emergency room visits for asthma among children under 15 accounted for nearly 9% of total activity in this age group during week 37—two weeks after the start of the school year (compared to an average of less than 3% for the rest of the year). During that same week, there was also a spike of nearly 3% in overall activity according to SOS Médecins data (compared to an average of less than 1.4% for the rest of the year).