Patch test results with the European baseline series, 2019/20—Joint European results of the ESSCA and the EBS working groups of the ESCD, and the GEIDAC

• DOI: 10.1111/cod.14170
• Publication Date: 2022-06-09T10:49:46Z
• Authors: Wolfgang Uter; S. Mark Wilkinson; Olivier Aerts; Andrea Bauer; Leopoldo Borrego; Richard Brans; Timo Buhl; Heinrich Dickel; Aleksandra Dugonik; Francesca Larese ...; Pedro Mercader Ga...; Ana Giménez‐Arnau; Cataldo Patruno; Maria Pesonen; Györgyi Pónyai; Thomas Rustemeyer; Steffen Schubert; Marie‐L. A. Schut...; Dagmar Simon; Luca Stingeni; Skaidra Valiukevi...; Elke Weisshaar; Thomas Werfel; Margarida Gonçalo
• Keywords: Patch test; Patch Testing; Contact Allergy

Continual analyses of patch test results with the European baseline series (EBS) serve both contact allergy surveillance and auditing value included allergens.To present current EBS testing, obtained in 53 departments 13 countries during 2019 2020.Anonymised or pseudonymised individual data partly aggregated on demographic/clinical characteristics rest were prospectively collected centrally pooled analysed.In 2020, 22 581 patients tested EBS. Sensitization to nickel remained most common (19.8 [19.2-20.4]% positivity [95% confidence interval]). Fragrance mix I Myroxylon pereirae yielded very similar 6.80 (6.43-7.19)% 6.62 (6.25-7.00)% positivity, respectively. Formaldehyde at 2% aq. almost one percentage point more positive reactions than 1% concentration (2.49 [2.16-2.85]% vs. 1.59 [1.33-1.88]); methylchloroisothiazolinone/methylisothiazolinone (MCI/MI) MI alone up around 5% positives. Among new additions, propolis was commonly (3.48 [3.16-3.82]%), followed by 2-hydroxyethyl methacrylate (2.32 [2.0-2.68]%).Ongoing prevalence sensitization contributes an up-to-date containing frequent and/or relevant sensitizers for routine testing Europe.