SIgE reactivities to allergens in patients from different months
Figure 4 displayed the prevalence pattern of allergens in a year month. Prevalence of dog dander and mold mix in a year month is very stable. The prevalence of other allergens fluctuates from January to December. Peaks of tree pollen mix are located in April and October when the prevalence is much higher than in other months. The prevalence of German cockroach and house dust mite sensitization varied obviously during the 12 months, but it did not vary as much as sensitization to the tree pollen mix. For German cockroaches, the peak was in June to August, when the prevalence was as high as approximately 28%, and the trough occurred in October when the prevalence was as low as 18%. The prevalence of other months fluctuated between 20% and 25.8%. The prevalence of house dust mite sensitization increased starting in April and rises to peak in July and then gradually decreases and tends to balance from October. The prevalence of food allergen sensitization also fluctuated among months. The prevalence of crab and shrimp sensitization was somewhat similar to that of house dust mites. Their prevalence patterns increased from May and formed a large and smooth peak in June, July and August, decreased in September and tended to stabilize starting in October. Fluctuations in the prevalence of egg whites and cow’s milk sensitization were smaller than those in crab and shrimp, but peaks existed. The peaks for cow’s milk and egg whites were located in May and June, respectively.