Preventive sublingual immunotherapy in preschool children: First evidence for safety and pro‐tolerogenic effects

Prevention of new IgE sensitizations has been described during allergen‐specific immunotherapy. However, prospective data using a preventive approach in very young children who would benefit most are missing. We initiated a prospective pilot study investigating the safety, immunomodulatory, and sensitization‐preventive effect of sublingual immunotherapy (SLIT) in mono/oligoclonally sensitized, clinically asymptomatic children 2–5 yr of age.

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