Blood eosinophil counts during bronchiolitis are related to bronchial hyper‐responsiveness and lung function in early adolescence

Aim To assess whether inflammatory markers measured in urine and blood during acute bronchiolitis in infancy were associated with asthma, lung function, bronchial hyper‐responsiveness ( BHR ) and atopy at 11 years of age. Methods We included 105 children hospitalised for bronchiolitis during their first year of life. At hospitalisation, urinary ( U ‐) eosinophil protein X , U ‐leukotriene E 4 , U‐prostaglandin 9α, 11β‐ PGF 2 and blood eosinophil...