Pollen season identification for three pollen taxa in Thessaloniki, Greece: a 30-year retrospective analysis
To examine the applicability of the recently proposed criteria by the European Academy of Allergy and Clinical Immunology (EAACI) for pollen season (PS) definition, we applied them to a 30-year time series of daily concentrations of cypress (Cupressaceae), olive (Oleaceae), and grass (Poaceae) airborne pollen from a Mediterranean city, Thessaloniki, Greece. These criteria led to PS definition for every year in the case of grasses, but they did not result to a defined pollen season in each year for 10% of the examined period in the case of cypress (Cupressaceae) and even for 60% in the case of olive (Oleaceae). Application of the EAACI thresholds to data series of Thessaloniki shows the need for an accurate analysis and revision of the symptom thresholds for PS definition for olive and cypress in the Mediterranean area. Given that the PS, as defined after the EAACI criteria, corresponds to only the part of the PS inducing allergy symptoms, a different term ‘allergy symptom-inducing pollen season’ is proposed so as to avoid confusion but also make clear that, depending on the purpose of the study, different criteria may be used for PS definition.
KeywordsAllergy symptom-inducing pollen season Allergic rhinitis Cypress EAACI criteria Grasses Mediterranean Olive
KK initiated the study, made data analysis, and drafted the manuscript; AT made data analysis and PS calculations; AC, AD, and DV provided pollen data and expert support. All authors contributed to the writing of the manuscript and DV concluded the final version.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- Damialis, A., Häring, F., Gökkaya, M., Rauer, D., Reiger, M., Bezold, S., et al. (2019). Human exposure to airborne pollen and relationships with symptoms and immune responses: Indoors versus outdoors, circadian patterns and meteorological effects in alpine and urban environments. Science of the Total Environment,653, 190–199.CrossRefGoogle Scholar
- HNMS. (2018). Hellenic national meteorological service, climatic data for selected stations in Greece—Thessaloniki Mikra. http://www.hnms.gr/emy/en/climatology/climatology_city. Accessed March 03, 2019.
- Karatzas, K., Katsifarakis, N., Riga, M., Werchan, B., Werchan, M., Berger, U., et al. (2018a). New European Academy of Allergy and Clinical Immunology definition on pollen season mirrors symptom load for grass and birch pollen-induced rhinitis. Allergy. https://doi.org/10.1111/all.13487.CrossRefGoogle Scholar
- Kassandros, T., Tsiamis, A., Damialis, A., Vokou, D., Katsifarakis, N., & Karatzas, K. (2018). Analysis and modelling of biological weather data in Thessaloniki. In N. Theodosiou, C. Christodoulatos, A. Koutsospyros, D. Karpouzos & Z. Mallios (Eds.), Protection and restoration of the environment XIV, proceedings of an international congress, Thessaloniki, Macedonia, Greece (pp. 274–283). ISBN: 978-960-99922-4-4. http://pre14.civil.auth.gr/images/DownLoads/03-PRE-XIV_Book-of-Proceedings.pdf.
- Lipiec, A., Rapiejko, P., Samoliński, B., & Krzych, E. (2005). Correlation between conjunctival provocation test results and conjunctival symptoms in pollinosis—Preliminary report. Annals of Agricultural and Environmental Medicine,12, 17–20.Google Scholar
- Pfaar, O., et al. (2019). Pollen season is reflected on symptom load for grass and birch pollen-induced allergic rhinitis in different geographic areas-an EAACI Task Force Report (in preparation).Google Scholar
- Rachovitsas, D., Papadopoulou, D., Kollis, S., Zisi, A., & Psillas, G. (2017). Allergic rhinitis: Clinical patterns and risk factors in Thessaloniki and Northern Greece. A retrospective study in a tertiary reference clinic. Gazzeta Medica Italiana – Archivio per le Scienze Mediche,176, 489–496.Google Scholar
- Sedghy, F., Varasteh, A.-R., Sankian, M., & Moghadam, M. (2018). Interaction between air pollutants and pollen grains: The role on the rising trend in allergy. Reports of Biochemistry & Molecular Biology,6, 220–224.Google Scholar
- Thibaudon, M. (2003). Allergy risk associated with pollens in France. European Annals of Allergy and Clinical Immunology,35, 170–172.Google Scholar