Pollen Exposure Increases the Risk of Respiratory Symptoms in Infants: A Longitudinal Study

Exposure to pollen has been associated with an increased risk of respiratory symptoms in both allergic and nonallergic individuals. However, the association of pollen exposure with respiratory symptoms during infancy, a particularly vulnerable period for lung development, remains unclear. The goal of this study was to examine whether pollen exposure is associated with respiratory symptoms (cough, wheezing, and dyspnoea) during the first year of life and to test if maternal atopy, infant’s sex, and air pollution modify this association.