Prevalence of parent-reported immediate hypersensitivity food allergy in Chilean school-aged children |
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| Affiliation: | 1. Allergy and Immunology Unit, Division of Pediatrics, School of Medicine, Pontificia Universidad Católica de Chile, Chile;2. Millennium Institute on Immunology and Immunotherapy, School of Medicine, Pontificia Universidad Católica de Chile, Chile;1. Institute of Biomedical Research, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil;2. Universidade Regional Integrada do Alto Uruguai e das Missões, Brazil;3. Laboratory of Molecular Parasitology, Institute of Biomedical Research, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil;4. School of Biosciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil;5. Department of Pathology, School of Medicine, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil;1. Allergy Unit, Department of Pediatrics, Anna Meyer Children''s University Hospital, Florence, Italy;2. Department of Surgical, Stomatologic and Mother-Child Sciences, Section of Pediatrics, University of Verona, Verona, Italy;3. Department of Pathology and Diagnostics, Section of Immunology, University of Verona, Verona, Italy;4. Department of Clinical and Experimental Medicine, Section of Pediatrics, University of Pisa, Pisa, Italy;1. Department of Pediatric Pneumology and Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany;2. Division of Allergy and Clinical Immunology, Department of Pediatrics, Federal University of São Paulo, São Paulo, Brazil;3. VBC Genomics, Vienna, Austria;4. Institute of Food Research, Norwich, United Kingdom;5. Pediatric Allergology and Pneumology, German Red Cross Hospital Westend, Berlin, Germany;1. The Texas Children''s Hospital, Section of Immunology, Allergy, and Rheumatology and the Baylor College of Medicine, Houston, Texas;2. Paediatrics and Child Health and INFANT Centre, University College Cork, Cork, Ireland;3. Children''s Hospital Colorado, University of Colorado School of Medicine, Section of Allergy and Immunology, Food Challenge and Research Unit, Aurora, Colo |
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| Abstract: | BackgroundFood allergies (FAs) affect 2–4% of school-aged children in developed countries and strongly impact their quality of life. The prevalence of FA in Chile remains unknown.MethodsCross-sectional survey study of 488 parents of school-aged children from Santiago who were asked to complete a FA screening questionnaire. Parents who reported symptoms suggestive of FA were contacted to answer a second in-depth questionnaire to determine immediate hypersensitivity FA prevalence and clinical characteristics of school-aged Chilean children.ResultsA total of 455 parents answered the screening questionnaire: 13% reported recurrent symptoms to a particular food and 6% reported FA. Forty-three screening questionnaires (9%) were found to be suggestive of FA. Parents of 40 children answered the second questionnaire; 25 were considered by authors to have FA. FA rate was 5.5% (95% CI: 3.6–7.9). Foods reported to frequently cause FA included walnut, peanut, egg, chocolate, avocado, and banana. Children with FA had more asthma (20% vs. 7%, P < 0.02) and atopic dermatitis (32% vs. 13%, P < 0.01) by report. The parents of children with FA did not report anaphylaxis, but 48% had history compatible with anaphylaxis. Of 13 children who sought medical attention, 70% were diagnosed with FA; none were advised to acquire an epinephrine autoinjector.ConclusionUp to 5.5% of school-aged Chilean children may suffer from FA, most frequently to walnut and peanut. It is critical to raise awareness in Chile regarding FA and recognition of anaphylaxis, and promote epinephrine autoinjectors in affected children. |
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| Keywords: | Anaphylaxis Children Chile Food allergy Prevalence Epinephrine autoinjector Parent-reported Immediate hypersensitivity Peanut allergy Walnut allergy |
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