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Atopy in wheezing infants always starts with monosensitization

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Previously, evidence has been provided that sensitization is frequent in asthmatic children and polysensitization represents the natural history of allergy. The aim of this study was to investigate whether polysensitization may occur primarily in infants with wheezing. Thus, 98 infants (<1 year of age) were studied at the onset of wheezing symptoms. All children underwent three visits (each including skin-prick test): at baseline and after 2 and 5 years. At onset of wheezing, 20% of infants were sensitized, whereas at 6 years the percentage was >60%. The most important finding was that there was no polysensitized infant at baseline, whereas most of the sensitized children were polysensitized at 6 years. Moreover, the number of sensitizations increased with age. House-dust mites were the most important cause of allergic symptoms. Wheezing may disappear mainly in nonallergic children. In conclusion, this study provided the first evidence that respiratory allergy always starts with monosensitization and confirms previous studies concerning the natural history of allergy characterized by the progression toward polysensitization.
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Keywords: Allergen; asthma; longitudinal; monosensitization; natural history; polysensitization; prevalence; prospective; skin test; wheezing

Document Type: Research Article

Affiliations: 1: Clinica Pediatrica, Istituto Giannina Gaslini, Universitá di Genova, Genova, Italy 2: Pneumologia, Istituto Giannina Gaslini, Genova, Italy 3: DIMI, Universitá di Genova, Genova, Italy 4: Dipartimento Patologie Testa Collo, Azienda Ospedaliera Universitaria San Martino, Genova, Italy

Publication date: 01 July 2007

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  • Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.

    The goal of the Proceedings is to publish articles with a predominantly clinical focus which directly impact quality of care for patients with allergic disease and asthma and by having the potential to directly impact the quality of patient care. AAP welcomes the submission of original works including peer-reviewed original research and clinical trial results. Additionally, as the official journal of the Eastern Allergy Conference (EAC), AAP will publish content from EAC poster sessions as well as review articles derived from EAC lectures.

    Featured topics include asthma, rhinitis, sinusitis, food allergies, allergic skin diseases, diagnostic techniques, allergens, and treatment modalities. Published material includes peer-reviewed original research, clinical trials and review articles.

    Articles marked "F" offer free full text for personal noncommercial use only.

    The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
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