2024 Yes 18-year evolution of asthma and allergic diseases in French urban schoolchildren in relation to indoor air pollutant levels https://www.resmedjournal.com/article/S0954-6111(19)30016-2/fulltext Sasso, Fabien Europe Review Students Elementary (K-5) Carbon Dioxide (CO2) Carbon Monoxide (CO) Volatile Organic Compounds (VOCs) Nitrogen Dioxide (NO2) Respiratory symptoms Asthma Allergy prevalence Epidemiology Air pollution children Follow-up of a 1998-1999 Marseilles study assessed asthma prevalence and PM2.5 exposure in schools. Despite lower pollutant levels in 2016, asthma remained linked to PM2.5, highlighting persistent risks from fine particles and other exposures. 2019