The "Stay at home" COVID-19 lockdown restriction may have prevented asthma exacerbations in children affected by pollen allergy: a single center experience.

Background: The "Stay at home" COVID-19 lockdown restriction represented a "real-life experiment" of pollen avoidance for children affected by pollen allergy.
Methods: The study retrospectively analyzed all children with a known diagnosis of pollen-allergy asthma who attended the emergency department (ED) for an asthma exacerbations (AE) in the town of Mantua and its province in the period March 09-May 03 of the years 2018, 2019 and 2020.
Results: In 2020, 4 (0.7%) children with a known diagnosis of pollen-allergy accessed the ED for an AE. Pediatric access was a total of 20 (0.5%) and 12 (0.3%) in 2018 and 2019 in the same period. The rate of hospitalization was 0 in 2020 versus 3 (15%) and 1 (8.3%) in 2018 and 2019, respectively.
Conclusions: The inevitable pollen avoidance during COVID-19 lockdown may have prevented asthma exacerbations in children affected by pollen allergy.