From:  Is Paris breathing? A scrutiny of the Paris thunderstorm asthma episode of June 2023

 Historical trends in the population of the Ile-de-France region and in the prevalence of allergic rhinitis and grass pollinosis in the general population in France, estimated burden on ER services for an ETSA episode of the same magnitude as that of June 2023 [3234].

YearPopulation of Paris region (× 106)AR prevalenceGrass pollen-induced AR prevalencePatients with grass pollen allergy (× 106)Estimated ER visits for asthma per ETSA
19689.24%1%0.11164*
198210.110%3%0.32480*
200611.531%10%1.131,671*
202312.333%**10%1.281,900

*: Extrapolation from prevalence on 11 June 2023 ETSA; **: prevalence data for year 2021. AR: allergic rhinitis; ER: emergency room; ETSA: epidemic thunderstorm asthma.