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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Perm Medical Journal</journal-id><journal-title-group><journal-title xml:lang="en">Perm Medical Journal</journal-title><trans-title-group xml:lang="ru"><trans-title>Пермский медицинский журнал (сетевое издание "Perm medical journal")</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0136-1449</issn><issn publication-format="electronic">2687-1408</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">683655</article-id><article-id pub-id-type="doi">10.17816/pmj42580-88</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original studies</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Analysis of long-term average pollination periods of birch and cereal grass</article-title><trans-title-group xml:lang="ru"><trans-title>Анализ средних многолетних значений периодов палинации березы и злаковых трав</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4754-2862</contrib-id><name-alternatives><name xml:lang="en"><surname>Devyatkova</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Девяткова</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Lecturer of the Department of Public Health and Healthcare with a Course in Healthcare Informatization</p></bio><bio xml:lang="ru"><p>преподаватель кафедры общественного здоровья и здравоохранения с курсом информатизации здравоохранения</p></bio><email>lizadev94@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2573-9173</contrib-id><name-alternatives><name xml:lang="en"><surname>Minaeva</surname><given-names>N. V.</given-names></name><name xml:lang="ru"><surname>Минаева</surname><given-names>Н. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>DSc (Medicine), Professor, Head of the Department of Pediatrics with a Course in Outpatient Pediatrics</p></bio><bio xml:lang="ru"><p>доктор медицинских наук, профессор, заведующая кафедрой педиатрии с курсом поликлинической педиатрии</p></bio><email>lizadev94@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9470-4065</contrib-id><name-alternatives><name xml:lang="en"><surname>Novoselova</surname><given-names>L. V.</given-names></name><name xml:lang="ru"><surname>Новоселова</surname><given-names>Л. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>DSc (Biology), Professor of the Department of Botany and Plant Genetics</p></bio><bio xml:lang="ru"><p>доктор биологических наук, профессор кафедры ботаники и генетики растений</p></bio><email>lizadev94@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4267-8031</contrib-id><name-alternatives><name xml:lang="en"><surname>Bankovskaya</surname><given-names>L. A.</given-names></name><name xml:lang="ru"><surname>Банковская</surname><given-names>Л. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>DSc (Medicine), Professor, Head of the Department of Public Health and Healthcare with a Course in Healthcare Informatization</p></bio><bio xml:lang="ru"><p>доктор медицинских наук, профессор, заведующая кафедрой общественного здоровья и здравоохранения с курсом информатизации здравоохранения</p></bio><email>lizadev94@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5237-9863</contrib-id><name-alternatives><name xml:lang="en"><surname>Tarasova</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Тарасова</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Medicine), Head of the Department of Allergology and Immunology</p></bio><bio xml:lang="ru"><p>кандидат медицинских наук, заведующая отделением аллергологии и иммунологии</p></bio><email>lizadev94@gmail.com</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2318-9390</contrib-id><name-alternatives><name xml:lang="en"><surname>Devyatkova</surname><given-names>G. I.</given-names></name><name xml:lang="ru"><surname>Девяткова</surname><given-names>Г. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>DSc (Medicine), Professor of the Department of Public Health and Healthcare with a Course in Healthcare Informatization</p></bio><bio xml:lang="ru"><p>доктор медицинских наук, профессор кафедры общественного здоровья и здравоохранения с курсом информатизации здравоохранения</p></bio><email>lizadev94@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Ye.A. Vagner Perm State Medical University</institution></aff><aff><institution xml:lang="ru">Пермский государственный медицинский университет имени академика Е.А. Вагнера</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Perm State National Research University</institution></aff><aff><institution xml:lang="ru">Пермский государственный национальный исследовательский университет</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Perm Regional Clinical Hospital</institution></aff><aff><institution xml:lang="ru">Пермская краевая клиническая больница</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-11-14" publication-format="electronic"><day>14</day><month>11</month><year>2025</year></pub-date><volume>42</volume><issue>5</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>80</fpage><lpage>88</lpage><history><date date-type="received" iso-8601-date="2025-06-09"><day>09</day><month>06</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-Вектор</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://permmedjournal.ru/PMJ/article/view/683655">https://permmedjournal.ru/PMJ/article/view/683655</self-uri><abstract xml:lang="en"><p><bold>Objective</bold><bold>.</bold> To analyze the long-term average values of the birch and cereal pollination periods.</p> <p><bold>Relevance.</bold> Fluctuations in the concentration of pollen grains from allergenic plants in the air significantly affect allergy symptoms in sensitive patients, that is why aeropalynological monitoring is so important.</p> <p><bold>Materials and methods</bold><bold>.</bold> An analysis of aeropallinological monitoring data for the city of Perm from 2010 to 2019 and in 2023 was carried out. For the birch and cereals, an assessment of the main pollination period was made based on 98% of the total annual number of pollen grains (MPP 98) and the pollination season (PS) according to the method of the European Academy of Allergy &amp; Clinical Immunology (EAACI). Statistical processing of the obtained data was carried out using the following programs: Microsoft Excel® 2016 was applied for the calculation of the median total pollen grains concentration (p. g.) of the birch and cereals, the duration of pollination of these plants, Statistica 6 was used to determine the differences between median values based on the Mann-Whitney U-criterion.</p> <p><bold>Results</bold><bold>.</bold> The median total pollen grains concentration of the birch per season was 19,478 [3,024; 32,094] p.g./m<sup>3</sup>, cereals – 522 [238; 916] p.g./m<sup>3</sup>, the median duration of the pollination period of the birch was 31 [22; 36] days, cereals – 35 [31; 49] days according to the EAACI method. Statistically significant differences were detected between the duration of cereal pollination when calculated using the MPP 98 and PS methods (<italic>p</italic> = 0.01).</p> <p><bold>Conclusions</bold><bold>.</bold> High inter-seasonal variability in the total pollen grains concentration of allergenic plants was determined, the intensity of birch pollination per season in 2013 and 2014 differed by 35 times, that of cereals in 2015, 2016 – by 9 times.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Цель.</bold> Провести анализ средних многолетних значений периодов пыления березы и злаков.</p> <p><bold>Актуальность.</bold> Колебания концентрации пыльцевых зерен аллергенных растений в воздухе существенно влияют на симптомы аллергии у чувствительных пациентов, поэтому так важен аэропалинологический мониторинг.</p> <p><bold>Материалы и методы.</bold> Проведен анализ данных аэропалинологического мониторинга г. Перми с 2010 по 2019 г. и в 2023 г. Для березы и злаков осуществлена оценка основного периода пыления из расчета 98 % от суммарного годового количества пыльцевых зерен (ОПП 98) и сезона пыления (СП) по методике European Academy of Allergy &amp;Clinical Immunology (EAACI). Статистическая обработка полученных данных проводилась с помощью программ: Microsoft Excel® 2016 – расчет медианы суммарной концентрации пыльцевых зерен (п.з.) березы и злаков, продолжительности пыления этих растений, Statistica 6 – определение различий между медианными значениями на основе <italic>U</italic>-критерия Манна – Уитни.</p> <p><bold>Результаты.</bold> Медиана суммарной концентрации пыльцевых зерен березы за сезон составила 19 478 [3024; 32094] п.з./м<sup>3</sup>, злаков – 522 [238; 916] п.з./м<sup>3</sup>, медиана продолжительности пыления березы составила 31 [22; 36] день, злаков – 35 [31; 49] дней по методике EAACI. Статистически значимые различия установлены между продолжительностями пыления злаков при расчете методами ОПП 98 и СП (<italic>р</italic> = 0,01).</p> <p><bold>Выводы. </bold>Установлена высокая межсезонная изменчивость суммарной концентрации пыльцевых зерен аллергенных растений, интенсивность пыления березы за сезон в 2013 и 2014 гг. различалась в 35 раз, злаков в 2015, 2016 гг. – в 9 раз.</p></trans-abstract><kwd-group xml:lang="en"><kwd>pollinosis</kwd><kwd>allergic diseases</kwd><kwd>pollen monitoring</kwd><kwd>pollen concentration</kwd><kwd>birch</kwd><kwd>cereals</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>поллиноз</kwd><kwd>аллергические заболевания</kwd><kwd>пыльцевой мониторинг</kwd><kwd>концентрация пыльцы</kwd><kwd>береза</kwd><kwd>злаки</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Vishneva E.A., Namazova-Baranova L.S., Alekseeva A.A. et al. 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