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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">Aspirantskiy Vestnik Povolzhiya</journal-id><journal-title-group><journal-title xml:lang="en">Aspirantskiy Vestnik Povolzhiya</journal-title><trans-title-group xml:lang="ru"><trans-title>Аспирантский вестник Поволжья</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2072-2354</issn><issn publication-format="electronic">2410-3764</issn><publisher><publisher-name xml:lang="en">Samara State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">689960</article-id><article-id pub-id-type="doi">10.35693/AVP689960</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>INFECTIOUS DISEASES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ИНФЕКЦИОННЫЕ БОЛЕЗНИ</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">Characteristics of the clinical course of coronavirus infection in healthcare workers during periods of dominance of various genetic variants</article-title><trans-title-group xml:lang="ru"><trans-title>Особенности клинического течения коронавирусной инфекции у медицинских сотрудников в периоды доминирования различных геновариантов</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7786-3777</contrib-id><name-alternatives><name xml:lang="en"><surname>Medvedeva</surname><given-names>Evgeniya A.</given-names></name><name xml:lang="ru"><surname>Медведева</surname><given-names>Евгения Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine), Associate professor of the Department of Pediatric Infectious Diseases</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доцент кафедры детских инфекционных болезней</p></bio><email>evgeniya0103med@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2179-8421</contrib-id><name-alternatives><name xml:lang="en"><surname>Maryin</surname><given-names>German G.</given-names></name><name xml:lang="ru"><surname>Марьин</surname><given-names>Г. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor of the Department of Epidemiology</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор кафедры эпидемиологии</p></bio><email>ger-marin@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3612-1889</contrib-id><name-alternatives><name xml:lang="en"><surname>Ploskireva</surname><given-names>Antonina A.</given-names></name><name xml:lang="ru"><surname>Плоскирева</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor of the Russian Academy of Sciences, Deputy Director for clinical work</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор РАН, заместитель директора по клинической работе</p></bio><email>evgeniya0103med@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4185-9829</contrib-id><name-alternatives><name xml:lang="en"><surname>Letyushev</surname><given-names>Aleksandr N.</given-names></name><name xml:lang="ru"><surname>Летюшев</surname><given-names>А. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine), Deputy Head</p></bio><bio xml:lang="ru"><p>канд. мед. наук, заместитель руководителя</p></bio><email>letiushev_an@rospotrebnadzor.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6607-3793</contrib-id><name-alternatives><name xml:lang="en"><surname>Chebotareva</surname><given-names>Tatyana A.</given-names></name><name xml:lang="ru"><surname>Чеботарева</surname><given-names>Т. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor, Head of the Department of Pediatric Infectious Diseases</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, заведующая кафедрой детских инфекционных болезней</p></bio><email>chebotarevata@rmapo.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7176-4022</contrib-id><name-alternatives><name xml:lang="en"><surname>Loginov</surname><given-names>Vladimir A.</given-names></name><name xml:lang="ru"><surname>Логинов</surname><given-names>В. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine), Head of the Gastroenterology Center</p></bio><bio xml:lang="ru"><p>канд. мед. наук, руководитель Гастроэнтерологического центра</p></bio><email>evgeniya0103med@yandex.ru</email><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Russian Medical Academy for Continuous Professional Education</institution></aff><aff><institution xml:lang="ru">ФГБОУ ДПО РМАНПО Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Central Research Institute of Epidemiology</institution></aff><aff><institution xml:lang="ru">ФБУН Центральный НИИ эпидемиологии Роспотребнадзора</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing</institution></aff><aff><institution xml:lang="ru">Федеральная служба по надзору в сфере защиты прав потребителей и благополучия человека</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Podolsk Regional Clinical Hospital</institution></aff><aff><institution xml:lang="ru">ГБУЗ «Подольская областная клиническая больница» Минздрава Московской области</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-11-22" publication-format="electronic"><day>22</day><month>11</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-12-09" publication-format="electronic"><day>09</day><month>12</month><year>2025</year></pub-date><volume>25</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>4</fpage><lpage>10</lpage><history><date date-type="received" iso-8601-date="2025-08-29"><day>29</day><month>08</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-09-28"><day>28</day><month>09</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Medvedeva E.A., Maryin G.G., Ploskireva A.A., Letyushev A.N., Chebotareva T.A., Loginov V.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Медведева Е.А., Марьин Г.Г., Плоскирева А.А., Летюшев А.Н., Чеботарева Т.А., Логинов В.А.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Medvedeva E.A., Maryin G.G., Ploskireva A.A., Letyushev A.N., Chebotareva T.A., Loginov V.A.</copyright-holder><copyright-holder xml:lang="ru">Медведева Е.А., Марьин Г.Г., Плоскирева А.А., Летюшев А.Н., Чеботарева Т.А., Логинов В.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://aspvestnik.ru/2410-3764/article/view/689960">https://aspvestnik.ru/2410-3764/article/view/689960</self-uri><abstract xml:lang="en"><p><bold>Aim</bold> – to study the course of the acute period of infection caused by SARS-CoV-2 in healthcare workers in comparison with individuals not engaged in medical activities.</p> <p><bold>Material and methods.</bold> A cross-sectional online study was conducted from June to September 2022. To study the frequency of COVID-19 episodes in healthcare workers and individuals of other professions, an internet resource (testograf.ru) was used, based on which anonymous online questionnaires were posted. The questionnaire included three blocks of questions: information about the patient; data on previous NCI and vaccination; data on the recovery period of NCI (presence of complaints, period of occurrence and their duration). The analysis included 22,535 individuals who had COVID-19.</p> <p><bold>Results.</bold> In general, during this period, healthcare workers were characterized by a more frequent registration of pneumonia (22.6% vs. 20.5%, p = 0.0002) and the need for oxygen support (6.7% and 5.1%, p &lt; 0.0001), the presence of complicated course (7.3% vs. 6.9%, p = 0.2506). Despite the similarity of the clinical picture during the period of circulation of various strains of NCI, features of the clinical course were revealed depending on the circulating predominant strain. The effectiveness of the vaccination against COVID-19 was revealed during the period of dominance of the “Wuhan” and “Delta” genetic variants and the lack of effectiveness during the period of dominance of “Omicron”.</p> <p><bold>Conclusion. </bold>A feature of our study was the presentation of data using an internet resource, which allows us to fully reflect the objective reality in the framework of morbidity among healthcare workers. The study revealed the features of the clinical course in healthcare workers.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Цель</bold> – изучить течение острого периода инфекции, вызванной SARS-CoV-2, у медработников в сравнении с лицами, не осуществляющими медицинскую деятельность.</p> <p><bold>Материал и методы.</bold> Проведено одномоментное онлайн-исследование в период с июня по сентябрь 2022 года. Для изучения частоты и особенностей эпизодов заболевания COVID-19 у медицинских сотрудников и лиц иных профессий был использован интернет-ресурс (testograf.ru), на базе которого была размещены анонимные онлайн-анкеты. Анкета включала три блока вопросов: сведения о пациенте; данные о перенесенной новой коронавирусной инфекции (НКИ) и вакцинации; данные периода реконвалесценции НКИ (наличие жалоб, период возникновения и их продолжительность). В анализ были включены 22 535 лиц, перенесших СOVID-19.</p> <p><bold>Результаты. </bold>В целом в указанный период у медработников часто регистрировалась пневмония (22,6% против 20,5%, р=0,0002), возникала необходимость в кислородной поддержке (6,7 % и 5,1% р&lt;0,0001) и отмечалось наличие осложненного течения (7,3% против 6,9%, р=0,2506). Несмотря на схожесть клинической картины НКИ, были выявлены особенности клинического течения в зависимости от циркулирующего преобладающего штамма. Отмечена эффективность проведенной вакцинации против COVID-19 в период доминирования геновариантов Уханьский и Delta и отсутствие ее эффективности в отношении Omicron.</p> <p><bold>Заключение. </bold>Представление данных с использованием интернет-ресурса наиболее полно отражает объективную реальность в рамках заболеваемости медработников. Исследование позволило выявить особенности клинического течения у сотрудников медицинской службы.</p></trans-abstract><kwd-group xml:lang="en"><kwd>coronavirus</kwd><kwd>vaccination</kwd><kwd>COVID-19</kwd><kwd>healthcare workers</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>коронавирус</kwd><kwd>вакцинация</kwd><kwd>COVID-19</kwd><kwd>медицинские сотрудники</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Ploskireva AA, Gorelov AV, Letyushev AN, et al. Post-covid syndrome: classification of clinical forms. 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