(Table 2)
The difference in inhaled allergen sIgE grade before and during COVID-19
The inhaled allergen sIgE grade distribution before and during COVID-19 was as follows: The sIgE grades of d1 and d2 were mainly at the grade 4-6 (high-grade group), while the sIgE grades of other inhaled allergens were mainly at the grade 1-3 (low-grade group). During COVID-19, the proportion of d1 and d2 high-grade groups increased compared with that before COVID-19, the difference was statistically significant (P<0.05), while the proportion of mx2 and e2 high-grade groups decreased compared with that before COVID-19, with a statistical difference (d1:X2=9.576, P<0.05;d2 :X2=39.063, P<0.05 )(Table 3 ).