Peanut allergy among schoolchildren in Mexico: findings from a national survey

Martín Bedolla-Barajas; Ma. Gracia Belinda Guerrero-Núñez; Blanca María Morfin-Maciel; German Agustín Rico-Solís; Javier Domínguez-Morales; Alejandro García-Aguirre; Martín Ramírez-Soto; Edna Araceli Santos-Valencia; Daniela Rivero-Yeverino; Sandra Chávez-González; Ileana María Madrigal-Beas; Jaime Morales-Romero

doi:10.37349/eaa.2026.1009110

Exploration of Asthma & Allergy ›› 2026, Vol. 4 ›› Issue (1) :1009110 DOI: 10.37349/eaa.2026.1009110

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Peanut allergy among schoolchildren in Mexico: findings from a national survey

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¹ Department of Allergy and Clinical Immunology, New Civil Hospital of Guadalajara “Dr. Juan I. Menchaca”, Guadalajara, Jal. 44340, Mexico

² Hospital Beneficencia Española de Tampico, Tampico, Tamps. 89120, Mexico

³ Hospital San Angel Inn Chapultepec, Ciudad de Mexico 06600, Mexico

⁴ Hospitales Puerta de Hierro, Colima 28018, Mexico

⁵ Clínica Hospital ISSSTE “Dr. Roberto Nettel Flores”, Tapachula, Chis. 30740, Mexico

⁶ Hospital Star Medica, Ciudad Juárez, Chih. 32618, Mexico

⁷ Universidad Quetzalcóatl Irapuato, Irapuato, Gto. 36615, Mexico

⁸ Centro Médico Medici, Puebla 72090, Mexico

⁹ Hospital Universitario de Puebla, Puebla 72410, Mexico

¹⁰ Torre Médica Corner Center, Cancún, Q.R. 77533, Mexico

¹¹ UMAE Hospital de Especialidades CMNO, IMSS, Guadalajara, Jal. 44340, Mexico

¹² Instituto de Salud Pública, Universidad Veracruzana, Xalapa, Ver. 91190, Mexico

^*Martín Bedolla-Barajas, Department of Allergy and Clinical Immunology, Division of Internal Medicine, New Civil Hospital of Guadalajara “Dr. Juan I. Menchaca”, Guadalajara, Jal. 44340, Mexico.drmbedbar@gmail.com

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Abstract

Peanut allergy (PA) is a significant public health problem in Western countries; however, while some previous work has been conducted in Mexico among specific subgroups, the national prevalence of PA in the Mexican population remains unknown. This ENRADAL-MEX study aimed to estimate the prevalence of PA among Mexican schoolchildren. A total of 4,269 children aged 6–12 years were included (mean age: 8.7 years; 51.7% male). The national prevalence of adverse food reactions was 9.5%; among these, 16 cases (0.37%) were associated with peanut consumption, but only 11 presented symptoms within the first hour after ingestion, yielding a PA prevalence of 0.26% (95% CI: 0.14–0.47%). Five cases corresponded to convincing non-severe reactions, and the other five to convincing severe reactions (prevalence of 0.12%; 95% CI: 0.06–0.28%, each). Oral symptoms occurred in 54.5% of cases, and 63.6% also had tree nut allergy, with no reactions to other legumes. Since this national study is the first of its kind and indicates that PA is not currently a public health problem among Mexican schoolchildren, further research is encouraged for more comprehensive results.

Keywords

peanut allergy / food hypersensitivity / child / epidemiology / prevalence

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Martín Bedolla-Barajas, Ma. Gracia Belinda Guerrero-Núñez, Blanca María Morfin-Maciel, German Agustín Rico-Solís, Javier Domínguez-Morales, Alejandro García-Aguirre, Martín Ramírez-Soto, Edna Araceli Santos-Valencia, Daniela Rivero-Yeverino, Sandra Chávez-González, Ileana María Madrigal-Beas, Jaime Morales-Romero. Peanut allergy among schoolchildren in Mexico: findings from a national survey. Exploration of Asthma & Allergy, 2026, 4 (1) : 1009110 DOI:10.37349/eaa.2026.1009110

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