ArticleAllergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology2026
Early-life antibiotics and childhood allergy: a multi-center cohort.
Article in Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundAntibiotic use in infants is hypothesized to alter the gut microbiota, influencing immune system dysregulation and increasing allergy risk. We aim to assess the prevalence of allergic diseases in children treated with different classes of antibiotics in early life.
methodsA retrospective cohort study was conducted from April 2024 to January 2025 in three main hospitals in the West Bank in Palestine. Records of pediatric admissions of children who received antibiotic treatment within their first six months of life were reviewed, followed by parents' interview regarding the development of allergies.
resultsA total of 423 medical records were included. The average age of children was 7.33 ± 1.38 years (mean ± SD), and 62.41% of them were males. The total prevalence of allergic diseases was 29.55%. Common manifestations of allergies were skin reactions (70.4%), wheezing (16.8%), and respiratory symptoms (10.4%). Among the most common reported triggers were food (10.17%) and dust (7.33%). The most commonly prescribed antibiotics were Beta-lactams; cefotaxime (78.49%), and ampicillin (63.59%). No statistically significant association was found between the number of antibiotics used and the development of allergies (p = 0.45). Similarly, different classes of antibiotics did not show an impact on developing allergies except for Trimethoprim/Sulfamethoxazole (p = 0.05). A significant decrease in allergy was observed with increasing age (p = 0.011).
conclusionAllergic conditions affect about one third of children treated with antibiotics in early life. While allergic conditions tended to decrease with age, no association was observed between antibiotic number/class and later allergy, except for a hypothesis-generating signal toward lower odds with TMP-SMX.
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