Prevalence and clinical features of adverse food reactions in Portuguese adolescents

Lozoya, Carlos; Rodrigues, Alexandra; Fernandes, Patrícia; Lourenço, Olga; Fonseca, Ana Mafalda; Taborda-Barata, Luís

doi:10.1016/j.waojou.2020.100453

Cited by 5 publications

(4 citation statements)

References 51 publications

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“…The new reports included were based on 54 newly identified studies, and on one study already included in the previous review but presenting updated data for the cohort enrolled in the study. Putting together the number of reports (and studies) included in the first systematic review from EAACI, with the records screened and included for the current review (September 2012 to June 2021), the total number of reports included was 147, which were based on 110 studies 4–150 …”

Section: Resultsmentioning

confidence: 99%

Frequency of food allergy in Europe: An updated systematic review and meta‐analysis

Spolidoro

Amera

Ali

et al. 2022

Allergy

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Food allergy (FA) is increasingly reported in Europe, however, the latest prevalence estimates were based on studies published a decade ago. The present work provides the most updated estimates of the prevalence and trends of FA in Europe. Databases were searched for studies published between 2012 and 2021, added to studies published up to 2012. In total, 110 studies were included in this update. Most studies were graded as moderate risk of bias. Pooled lifetime and point prevalence of self‐reported FA were 19.9% (95% CI 16.6–23.3) and 13.1% (95% CI 11.3–14.8), respectively. The point prevalence of sensitization based on specific IgE (slgE) was 16.6% (95% CI 12.3–20.8), skin prick test (SPT) 5.7% (95% CI 3.9–7.4), and positive food challenge 0.8% (95% CI 0.5–0.9). While lifetime prevalence of self‐reported FA and food challenge positivity only slightly changed, the point prevalence of self‐reported FA, sIgE and SPT positivity increased from previous estimates. This may reflect a real increase, increased awareness, increased number of foods assessed, or increased number of studies from countries with less data in the first review. Future studies require rigorous designs and implementation of standardized methodology in diagnosing FA, including use of double‐blinded placebo‐controlled food challenge to minimize potential biases.

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Section: Resultsmentioning

confidence: 99%

Frequency of food allergy in Europe: An updated systematic review and meta‐analysis

Spolidoro

Amera

Ali

et al. 2022

Allergy

View full text Add to dashboard Cite

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“…Briefly, 38,903 new records published during 2012–2021 were identified. After duplicates removal, and upon completion of the screening procedure, 43 new studies were included from the relevant literature and were added to the 50 studies already included in the previous EAACI reviews, giving a total of 93 studies included in this updated systematic review and meta‐analysis 5–127 . The characteristics (i.e.…”

Section: Resultsmentioning

confidence: 99%

Prevalence estimates of eight big food allergies in Europe: Updated systematic review and meta‐analysis

Spolidoro

Ali

Amera

et al. 2023

Allergy

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In 2014, the European Academy of Allergy and Clinical Immunology published prevalence estimates for food allergy (FA) and food sensitization (FS) to the so‐called eight big food allergens (i.e. cow's milk, egg, wheat, soy, peanut, tree nuts, fish and shellfish) in Europe for studies published between 2000 and 2012. The current work provides 10‐year updated prevalence estimates for these food allergens. A protocol was registered on PROSPERO before starting the research (reference number CRD42021266657). Six databases were searched for studies published 2012–2021, added to studies published up to 2012, resulting in a total of 93 studies. Most studies were graded as at moderate risk of bias. The overall pooled estimates for all age groups of self‐reported lifetime prevalence were as follows: cow's milk (5.7%, 95% confidence interval 4.4–6.9), egg (2.4%, 1.8–3.0), wheat (1.6%, 0.9–2.3), soy (0.5%, 0.3–0.7), peanut (1.5%, 1.0–2.1), tree nuts (0.9%, 0.6–1.2), fish (1.4%, 0.8–2.0) and shellfish (0.4%, 0.3–0.6). The point prevalence of food challenge‐verified allergy were as follows: cow's milk (0.3%, 0.1–0.5), egg (0.8%, 0.5–1.2), wheat (0.1%, 0.01–0.2), soy (0.3%, 0.1–0.4), peanut (0.1%, 0.0–0.2), tree nuts (0.04%, 0.02–0.1), fish (0.02%, 0.0–0.1) and shellfish (0.1%, 0.0–0.2). With some exceptions, the prevalence of allergy to common foods did not substantially change during the last decade; variations by European regions were observed.

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“…First of all, an important limitation was the fact that 24.1% of the participants who reported the presence of a reaction to food in the screening questionnaire did not continue the study. A high dropout rate is, in fact, something common in population-based studies [ 29 ], especially those involving several stages. Despite this, the sample size in our study remained sufficient to achieve statistical representativeness.…”

Section: Discussionmentioning

confidence: 99%

Prevalence of reported food allergies in Brazilian preschoolers living in a small Brazilian city

Correia

Antunes

Taborda-Barata

et al. 2022

Allergy Asthma Clin Immunol

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Introduction Although the prevalence of allergic diseases, including food allergies, has increased over recent decades, relevant information on this topic is still lacking, particularly in younger children living in small cities. Objective To investigate the prevalence of reported food allergies in preschoolers in Limoeiro/Pernambuco, Brazil. Methods This was a cross-sectional study with preschoolers. Parents/guardians of all preschoolers enrolled at municipal schools between March and June 2019 (total of 619) were invited to complete a screening questionnaire (total of 619). Another 151 questionnaires were applied on the streets of the town. For positive responses, a second, more detailed and validated questionnaire was completed. Results A total of 412 questionnaires were returned, of which, 47 presented a positive response to food allergies and only 29 (7.04%) identified a particular food. The most frequently reported food items were shrimp, mollusks, pork, fruit and milk. Of the 29 who identified foods, 22 responded to the detailed questionnaire, resulting in only 4 (0.97%) positive responses. Of these, two were later discarded through clinical examinations and an open oral provocation test, resulting in a final prevalence of 0.48% of confirmed food allergies. Conclusion The prevalence of reported food allergies was lower than that described in previous studies. The most commonly mentioned foods were shrimp, mollusks and pork, with more reports of multiple food allergies, even in children who had never been previously exposed to these possible allergens, which highlights the relevance of perception in reported food allergy studies.

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Prevalence and clinical features of adverse food reactions in Portuguese adolescents

Cited by 5 publications

References 51 publications

Frequency of food allergy in Europe: An updated systematic review and meta‐analysis

Frequency of food allergy in Europe: An updated systematic review and meta‐analysis

Prevalence estimates of eight big food allergies in Europe: Updated systematic review and meta‐analysis

Prevalence of reported food allergies in Brazilian preschoolers living in a small Brazilian city

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