Prevalence of persistent nasal symptoms
Table 3 summarizes the changes in the prevalences of the nasal symptoms,
nasal cytology findings and HDM sensitization during the 2-year
observation period. The prevalence of each of sneezing, runny nose,
nasal eosinophils and positive HDM-specific IgE increased significantly
from enrollment to the 2nd-year visit. Although the
high initial prevalence of neutrophils in the nasal secretions increased
even further over the 2 years, the eosinophil/neutrophil ratio also
increased, indicating that nasal eosinophilia became progressively
prevalent in early childhood.