Horse allergens: An underestimated risk for allergic sensitization in an urban atopic population without occupational exposure.

Background: Data on allergic sensitization to horse allergen in modern urban areas are scarce. The aim of this study was to investigate the characteristics of allergic sensitization and the modality of exposure to horse allergens in atopic patients living in an urban area and without occupational exposure to horse and/or horse-derived materials.

Methods: From among 1822 consecutive outpatients, we selected all subjects who had an immediate skin reaction to horse dander.