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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">jofin</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал инфектологии</journal-title><trans-title-group xml:lang="en"><trans-title>Journal Infectology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-6732</issn><publisher><publisher-name>IPO “АIDSSPbR"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22625/2072-6732-2025-17-2-73-79</article-id><article-id custom-type="elpub" pub-id-type="custom">jofin-1784</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Оригинальное исследование</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Original Research</subject></subj-group></article-categories><title-group><article-title>Влияют ли повторные прививки на заболеваемость коронавирусной инфекцией?</article-title><trans-title-group xml:lang="en"><trans-title>Do repeated vaccinations affect the incidence of coronavirus infection?</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тихомирова</surname><given-names>К. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Tikhomirova</surname><given-names>K. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тихомирова Ксения Кирилловна – аспират отдела вакцинопрофилактики и поствакцинальной патологии; старший медицинский лаборант кафедры инфекционных заболеваний у детей ФП и ДПО</p><p>тел.: 8(812)234-68-55</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Saint-Petersburg</p></bio><email xlink:type="simple">tihksen@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Харит</surname><given-names>С. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Kharit</surname><given-names>S. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Харит Сусанна Михайловна – заведующий научно-исследовательским отделом вакцинопрофилактикии поствакцинальной патологии; профессор кафедры инфекционных заболеваний у детей ФП и ДПО, д.м.н., профессор</p><p>тел.: 8 (812) 234-68-55</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Saint-Petersburg</p></bio><email xlink:type="simple">kharit-s@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Голева</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Goleva</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Голева Ольга Владимировна – старший научный сотрудник научно-исследовательского отделаэкспериментальной медицинской вирусологии, молекулярной генетики и биобанкинга, к.б.н.</p><p>тел.: +7-921-649 05 63</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Saint-Petersburg</p></bio><email xlink:type="simple">golev.ao@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральный научно-клинический центр инфекционных болезней;&#13;
Санкт-Петербургский государственный педиатрический медицинский университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Scientific and Clinical Center for Infectious Disease;&#13;
Saint-Petersburg Pediatric Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральный научно-клинический центр инфекционных болезней</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Scientific and Clinical Center for Infectious Disease</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>24</day><month>06</month><year>2025</year></pub-date><volume>17</volume><issue>2</issue><fpage>73</fpage><lpage>79</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тихомирова К.К., Харит С.М., Голева О.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Тихомирова К.К., Харит С.М., Голева О.В.</copyright-holder><copyright-holder xml:lang="en">Tikhomirova K.K., Kharit S.M., Goleva O.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://journal.niidi.ru/jofin/article/view/1784">https://journal.niidi.ru/jofin/article/view/1784</self-uri><abstract><p>Коронавирусная инфекция, вызванная SARS-CoV-2, становится одной из сезонных респираторных инфекций, что требует решения вопроса о продолжении вакцинации определенных групп лиц.Цель: изучить взаимосвязь клинической и иммунологической эффективности вакцинации и ревакцинации против COVID-19 у лиц разного возраста, состояния здоровья и профессионального риска.Методы: клиническое наблюдение за 258 взрослыми, вакцинированными, ревакцинированными, имеющими гибридный иммунитет, в катамнезе в течение 2 лет после прививки с оценкой частоты и тяжести подтвержденного лабораторно заболевания COVID-19; лабораторное исследование титров антител (IgG к RBD фрагменту S-белка) в сыворотке крови в динамике методом иммуноферментного анализа; статистическая обработка данных.Результаты: средние уровни антител после вакцинации составили 353,1±35,9 BAU/мл, после первой ревакцинации 481,6±30,1 BAU/мл и 2471,1±811,9 BAU/мл после второй ревакцинации (р&lt;0,01 критерий Стьюдента). У лиц с гибридным иммунитетом после вакцинации – 424,7±15,9BAU/мл, после ревакцинации 457±99,9 BAU/мл соответственно. Заболеваемость среди вакцинированных составила 32,9% после первичной вакцинации и 21,9% после ревакцинации. Исходный уровень антител у заболевших был достоверно ниже, чем у тех, кто не заболел (p&lt;0,005). После ревакцинации достоверных отличий в исходном уровне антител у заболевших и не заболевших не отмечалось. Среди людей с гибридным иммунитетом после вакцинации заболели 27,1%, также без достоверных различий в исходных уровнях антител у заболевших и не заболевших. Медицинские работники заболевали достоверно реже, чем немедицинские работники (16,7 и 66,7%, р&lt;0,05). Подтверждена относительно сильная корреляция (коэффициент Пирсона) риска заболевания, несмотря на наличие ревакцинации, у лиц старше 60 лет, по сравнению с группой молодого (к=0,418) и среднего (к=0,432) возраста.Заключение: люди с гибридным иммунитетом имеют такие же закономерности в предупреждении заболевания, как вакцинированные и ревакцинированные. Возраст старше 60 лет определяет необходимость проведения плановых ревакцинаций. Медицинские работники не подвержены повышенному риску заражения, если у них есть вакцинация, ревакцинация или сформировался гибридный иммунитет.</p></abstract><trans-abstract xml:lang="en"><p>Coronavirus infection caused by the SARS-CoV-2 virus is becoming one of the seasonal respiratory infections, which requires a decision on the continuation of vaccination for certain groups of people.The purpose: To study the relationship between the clinical and immunological efficacy of vaccination and revaccination against COVID-19 in people of different ages, health conditions and occupational risk.Research methods: Clinical observation of 258 adults who were vaccinated and revaccinated, as well as those with hybrid immunity, in a catamnesis for 2 years after vaccination with an assessment of the frequency and severity of confirmed coronavirus infection; laboratory examination of antibody titers (IgG to RBD fragment of S – protein) in blood serum over time by enzyme immunoassay; statistical data processing.Results: The average antibody levels after vaccination were 353.1±35.9 BAU/ml, after the first revaccination 481.6±30.1 BAU/ml, and 2471.1±811.9 BAU/ml after the second revaccination (p&lt;0.01 Student’s criterion). In individuals with hybrid immunity, after vaccination, 424.7±15.9 BAU/ml, after revaccination, 457±99.9 BAU/ml, respectively. The incidence among those vaccinated was 32.9% after primary vaccination and 21.9% after revaccination. The level of antibodies before the disease in patients was significantly lower than in those who did not get sick (pt&lt;0.005). After revaccination, there were no significant differences in the level of antibodies before the disease in those who were ill and those who were not. Among people with hybrid immunity, 27.1% became ill after vaccination, also without significant differences in antibody levels before the disease in those who were ill and those who were not. Medical workers were significantly less likely to get sick than non-medical workers (16.7% and 66.7%, p&lt;0.05). A relatively strong correlation (Pearson coefficient) of disease risk was confirmed, despite the presence of revaccination, in people over 60 years of age, compared with the young (k=0.418) and middle (k=0.432) age groups.Conclusion: People with hybrid immunity have the same patterns in disease prevention as vaccinated and revaccinated people. The age over 60 determines the need for routine revaccinations. Medical workers are not at increased risk of infection if they have been vaccinated, revaccinated, or have developed hybrid immunity.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>новая коронавирусная инфекция</kwd><kwd>COVID-19</kwd><kwd>вакцинация</kwd><kwd>антитела</kwd></kwd-group><kwd-group xml:lang="en"><kwd>new coronavirus infection</kwd><kwd>COVID 19</kwd><kwd>vaccination</kwd><kwd>antibodies</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Hoffmann M., Kleine-Weber H., Krüger N., et al. The novel coronavirus 2019 (2019-nCoV) uses the SARS-coronavirus receptor ACE2 and the cellular protease TMPRSS2 for entry into target cells. BioRxiv. 2020 Jan;31.929042 doi: 10.1101/2020.01.31.929042</mixed-citation><mixed-citation xml:lang="en">Hoffmann M., Kleine-Weber H., Krüger N., et al. 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