Aeroallergen sensitization
SPT to aeroallergens was performed in 269 subjects (96.4%) of whom completed the follow-up. Of these subjects, 36.8% (99/269) were sensitized to at least one aeroallergen. Polysensitization was found in about half of the sensitized patients (44%). Dermatophagoides pteronyssinus was the most common sensitized allergen (86.0%), followed by Bermuda grass (23.0%), cat hair (22.0%) and American cockroach (22.0%), German Cockroach (18.0%), dog hair (12.0%), and Johnson grass (6.0%) respectively. Sensitization to molds was relatively low, including Aspergillus spp. (2.0%) andCladosporium spp. (1.0%). Aeroallergen sensitization between healthy subjects and ever-wheezing (35.4% vs 35.8%) and between healthy subjects and rhinitis (36.1% vs 32.7%) were not significantly different. Having household furry pets (cats and dogs) or neighbourhood furry pets did not increase sensitization to pets in our cohort.