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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">Russian Journal of Infection and Immunity</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Infection and Immunity</journal-title><trans-title-group xml:lang="ru"><trans-title>Инфекция и иммунитет</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2220-7619</issn><issn publication-format="electronic">2313-7398</issn><publisher><publisher-name xml:lang="en">SPb RAACI</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1953</article-id><article-id pub-id-type="doi">10.15789/2220-7619-SOT-1953</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</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">Seroprevalence of tick-borne diseases in the Northwest Federal District of the Russian Federation</article-title><trans-title-group xml:lang="ru"><trans-title>Серопревалентность клещевых заболеваний в Северо-Западном федеральном округе Российской Федерации</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tokarevich</surname><given-names>N. K.</given-names></name><name xml:lang="ru"><surname>Токаревич</surname><given-names>Н. К.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD, MD (Medicine), Professor, Head of the Laboratory of Zoonoses</p></bio><bio xml:lang="ru"><p>д.м.н., профессор, зав. лабораторией зооантропонозных инфекций</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Blinova</surname><given-names>O. V.</given-names></name><name xml:lang="ru"><surname>Блинова</surname><given-names>О. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Chemistry), Junior Researcher, Laboratory of Zoonoses</p></bio><bio xml:lang="ru"><p>к.х.н., младший научный сотрудник лаборатории зооантропонозных инфекций</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Stoyanova</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Стоянова</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Medicine), Leading Researcher, Laboratory of Zoonoses</p></bio><bio xml:lang="ru"><p>к.м.н., ведущий научный сотрудник лаборатории зооантропонозных инфекций</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Baimova</surname><given-names>R. R.</given-names></name><name xml:lang="ru"><surname>Баимова</surname><given-names>Р. Р.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Junior Researcher, Laboratory of Zoonoses</p></bio><bio xml:lang="ru"><p>младший научный сотрудник лаборатории зооантропонозных инфекций</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Siuziumova</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Сюзюмова</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Junior Researcher, Laboratory of Zoonoses</p></bio><bio xml:lang="ru"><p>младший научный сотрудник лаборатории зооантропонозных инфекций</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lomonosova</surname><given-names>V. I.</given-names></name><name xml:lang="ru"><surname>Ломоносова</surname><given-names>В. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Junior Researcher, Laboratory of Zoonoses</p></bio><bio xml:lang="ru"><p>младший научный сотрудник лаборатории зооантропонозных инфекций</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tronin</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Тронин</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD, MD (Geology and Mineralogy), Director</p></bio><bio xml:lang="ru"><p>д.г.-м.н., директор</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Buzinov</surname><given-names>R. V.</given-names></name><name xml:lang="ru"><surname>Бузинов</surname><given-names>Р. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD, MD (Medicine), Associate Professor, Deputy Director for Development</p></bio><bio xml:lang="ru"><p>д.м.н., доцент, зам. директора по развитию</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sokolova</surname><given-names>O. V.</given-names></name><name xml:lang="ru"><surname>Соколова</surname><given-names>О. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Deputy Head of Epidemiological Surveillance Department</p></bio><bio xml:lang="ru"><p>зам. начальника отдела эпидемиологического надзора</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gnativ</surname><given-names>B. R.</given-names></name><name xml:lang="ru"><surname>Гнатив</surname><given-names>Б. Р.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Deputy Head of Epidemiological Surveillance Department of Rospotrebnadzor</p></bio><bio xml:lang="ru"><p>зам. начальника отдела эпидемиологического надзора</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Buts</surname><given-names>L. V.</given-names></name><name xml:lang="ru"><surname>Буц</surname><given-names>Л. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Head of Epidemiological Surveillance Department</p></bio><bio xml:lang="ru"><p>начальник отдела эпидемиологического надзора</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff6"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bubnova</surname><given-names>L. A.</given-names></name><name xml:lang="ru"><surname>Бубнова</surname><given-names>Л. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Head of the Epidemiology Department</p></bio><bio xml:lang="ru"><p>зав. эпидемиологическим отделом</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff7"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Safonova</surname><given-names>O. S.</given-names></name><name xml:lang="ru"><surname>Сафонова</surname><given-names>О. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Biologist</p></bio><bio xml:lang="ru"><p>биолог</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff7"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Stankevich</surname><given-names>A. I.</given-names></name><name xml:lang="ru"><surname>Станкевич</surname><given-names>А. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Head of Epidemiology Department</p></bio><bio xml:lang="ru"><p>зав. отделом эпидемиологии</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff8"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kalinina</surname><given-names>E. L.</given-names></name><name xml:lang="ru"><surname>Калинина</surname><given-names>Е. Л.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Head of the Epidemiological Surveillance Department</p></bio><bio xml:lang="ru"><p>начальник отдела эпидемиологического надзора</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff9"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vikse</surname><given-names>R.</given-names></name><name xml:lang="ru"><surname>Виксе</surname><given-names>Р.</given-names></name></name-alternatives><address><country country="NO">Norway</country></address><bio xml:lang="en"><p>D.Sci., Senior Researcher</p></bio><bio xml:lang="ru"><p>доктор наук, старший научный сотрудник</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff10"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Andreassen</surname><given-names>A. K.</given-names></name><name xml:lang="ru"><surname>Андреассен</surname><given-names>А. К.</given-names></name></name-alternatives><address><country country="NO">Norway</country></address><bio xml:lang="en"><p>Sci., Professor, Senior Researcher</p></bio><bio xml:lang="ru"><p>доктор наук, профессор, старший научный сотрудник</p></bio><email>zoonoses@mail.ru</email><xref ref-type="aff" rid="aff10"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">St. Petersburg Pasteur Institute</institution></aff><aff><institution xml:lang="ru">ФБУН НИИ эпидемиологии и микробиологии имени Пастера</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Scientific Research Centre for Ecological Safety of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Научно-исследовательский центр экологической безопасности Российской академии наук, Санкт-Петербургский федеральный исследовательский центр Российской академии наук (НИЦ РАН)</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Federal Service for Supervision of Consumer Rights Protection and Human Welfare in Arkhangelsk Oblast,</institution></aff><aff><institution xml:lang="ru">Федеральная служба по надзору в сфере защиты прав потребителей и благополучия человека по Архангельской области</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Federal Service for Supervision of Consumer Rights Protection and Human Welfare in Arkhangelsk Oblast</institution></aff><aff><institution xml:lang="ru">Федеральная служба по надзору в сфере защиты прав потребителей и благополучия человека по Архангельской области</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Federal Service for Supervision of Consumer Rights Protection and Human Welfare in the Republic of Komi</institution></aff><aff><institution xml:lang="ru">Федеральная служба по надзору в сфере защиты прав потребителей и благополучия человека по Республике Коми</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="en">Federal Service for Supervision of Consumer Rights Protection and Human Welfare in Leningrad Oblast</institution></aff><aff><institution xml:lang="ru">Федеральная служба по надзору в сфере защиты прав потребителей и благополучия человека по Ленинградской области</institution></aff></aff-alternatives><aff-alternatives id="aff7"><aff><institution xml:lang="en">Center of Hygiene and Epidemiology in the Karelia Republic</institution></aff><aff><institution xml:lang="ru">ФБУЗ Центр гигиены и эпидемиологии Республики Карелия</institution></aff></aff-alternatives><aff-alternatives id="aff8"><aff><institution xml:lang="en">Center of Hygiene and Epidemiology in Pskov Oblast</institution></aff><aff><institution xml:lang="ru">ФБУЗ Центр гигиены и эпидемиологии в Псковской области</institution></aff></aff-alternatives><aff-alternatives id="aff9"><aff><institution xml:lang="en">Federal Service for Supervision of Consumer Rights Protection and Human Welfare in Pskov Oblast</institution></aff><aff><institution xml:lang="ru">Федеральная служба по надзору в сфере защиты прав потребителей и благополучия человека по Псковской области</institution></aff></aff-alternatives><aff-alternatives id="aff10"><aff><institution xml:lang="en">Norwegian Institute of Public Health</institution></aff><aff><institution xml:lang="ru">Норвежский институт общественного здравоохранения</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2022-06-24" publication-format="electronic"><day>24</day><month>06</month><year>2022</year></pub-date><pub-date date-type="pub" iso-8601-date="2022-11-16" publication-format="electronic"><day>16</day><month>11</month><year>2022</year></pub-date><volume>12</volume><issue>5</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>891</fpage><lpage>901</lpage><history><date date-type="received" iso-8601-date="2022-05-16"><day>16</day><month>05</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2022-06-11"><day>11</day><month>06</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Tokarevich N.K., Blinova O.V., Stoyanova N.A., Baimova R.R., Siuziumova E.A., Lomonosova V.I., Tronin A.A., Buzinov R.V., Sokolova O.V., Gnativ B.R., Buts L.V., Bubnova L.A., Safonova O.S., Stankevich A.I., Kalinina E.L., Vikse R., Andreassen A.K.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, Токаревич Н.К., Блинова О.В., Стоянова Н.А., Баимова Р.Р., Сюзюмова Е.А., Ломоносова В.И., Тронин А.А., Бузинов Р.В., Соколова О.В., Гнатив Б.Р., Буц Л.В., Бубнова Л.А., Сафонова О.С., Станкевич А.И., Калинина Е.Л., Виксе Р., Андреассен А.К.</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Tokarevich N.K., Blinova O.V., Stoyanova N.A., Baimova R.R., Siuziumova E.A., Lomonosova V.I., Tronin A.A., Buzinov R.V., Sokolova O.V., Gnativ B.R., Buts L.V., Bubnova L.A., Safonova O.S., Stankevich A.I., Kalinina E.L., Vikse R., Andreassen A.K.</copyright-holder><copyright-holder xml:lang="ru">Токаревич Н.К., Блинова О.В., Стоянова Н.А., Баимова Р.Р., Сюзюмова Е.А., Ломоносова В.И., Тронин А.А., Бузинов Р.В., Соколова О.В., Гнатив Б.Р., Буц Л.В., Бубнова Л.А., Сафонова О.С., Станкевич А.И., Калинина Е.Л., Виксе Р., Андреассен А.К.</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://iimmun.ru/iimm/article/view/1953">https://iimmun.ru/iimm/article/view/1953</self-uri><abstract xml:lang="en"><p><italic>Introduction.</italic> Knowledge about tick-borne disease (TBD) distribution is necessary to improve prevention, whereas detection of human serum IgG antibodies against relevant pathogens is a method for monitoring TBD prevalence in local population. The study objective was to estimate seroprevalence of IgG antibodies against tick-borne encephalitis virus (TBEV), <italic>Borrelia burgdorferi sensu lato,</italic> <italic>Coxiella burnetii, Anaplasma phagocytophilum</italic>, and <italic>Ehrlichia chaffeensis</italic>/<italic>E. muris</italic> in healthy residents from the five territories of the Northwestern Federal District of the Russian Federation (Arkhangelsk Oblast, Leningrad Oblast, Pskov Oblast, the Republic of Komi and the Republic of Karelia). <italic>Materials and methods.</italic> In 2017–2019, a total of 1244 serum samples from healthy residents, not vaccinated against TBDs or other flavivirus-caused infections was studied by ELISA. <italic>Results.</italic> 21.7% of the sera samples contained IgG antibodies against a single TBD pathogen, whereas 2.1% showed signs of coinfection with two or more pathogens. The most common were IgG antibodies against TBEV (5 territories, 12.2%), followed by <italic>Borrelia burgdorferi sensu lato</italic> (5 territories, 3.5%), <italic>C. burnetii</italic> (4 territories, 2.9%), <italic>Anaplasma phago</italic><italic>с</italic><italic>ytophilum</italic> (3 territories, 1.6%), <italic>E. chaffeensis</italic>/<italic>E. muris</italic> (5 territories, 1.5%). The IgG antibodies were more common in men (55.2%) than in women (44.8%), being found virtually evenly in age-independent manner (from juniors under 18 to seniors over 60). <italic>Conclusion.</italic> The results of this first comprehensive serosurveillance study in the Northwestern Federal District of the Russian Federation assessing serum IgG antibodies against tick-borne diseases indicate a wide distribution of such pathogens. Moreover, infections caused by <italic>C. burnetii</italic>, <italic>Anaplasma phagocytophilum</italic>, and <italic>Ehrlichia chaffeensis</italic>/<italic>E. muris</italic> might be highly underdiagnosed.</p></abstract><trans-abstract xml:lang="ru"><p><italic>Введение.</italic> Знание распространения клещевых заболеваний необходимо для улучшения их профилактики, а выявление IgG-антител к их возбудителям в сыворотках крови человека является методом мониторинга распространенности клещевых заболеваний среди местного населения. Цель исследования: изучение серопревалентности практически здорового населения Архангельской, Ленинградской, Псковской, областей, Республик Коми и Карелии, расположенных на европейском Севере России, в отношении вируса КЭ, <italic>Borrelia burgdorferi sensu lato, Coxiella burnetii</italic>, <italic>Anaplasma phagocytophilum</italic> и <italic>Ehrlichia chaffeensis</italic>/<italic>E. muris</italic>. <italic>Материалы и методы.</italic> Всего было исследовано 1244 сыворотки крови практически здоровых лиц, постоянно проживающих на данной территории, не вакцинированных против клещевого энцефалита и других инфекций, вызываемых флавивирусами, профессия которых не связана с риском заражения клещевыми инфекциями. Cыворотки крови доноров исследовали методом ELISA. <italic>Результаты.</italic> Установлено, что в 21,7% образцах исследованных сывороток, полученных от жителей всех анализируемых территорий, обнаружены антитела класса IgG к возбудителям различных инфекций, передающихся клещами, в том числе в 26 пробах — одновременно к двум и более патогенам. В сыворотках жителей республик Коми и Карелия, а также Ленинградской области выявлены антитела ко всем исследованным антигенам, в сыворотках жителей Архангельской области — антитела к вирусу клещевого энцефалита, <italic>Borrelia burgdorferi sensu lato,</italic> <italic>С. </italic><italic>urnetiid</italic> и <italic>E. chaffeensis</italic>/<italic>E. muris</italic> а в сыворотках жителей Псковской области — антитела к вирусу клещевого энцефалита, <italic>Borrelia burgdorferi sensu lato</italic> и <italic>E. chaffeensis</italic>/<italic>E. muris</italic>. У мужчин IgG-антитела к клещевым инфекциям определялись чаще (55,2%), чем у женщин (44,8%). IgG-антитела к клещевым инфекциям были определены практически равномерно у жителей всех возрастов от детского (до 18 лет) до пожилого (старше 60 лет). <italic>Обсуждение.</italic> Представленные результаты первого комплексного обследования жителей европейского Севера России на наличие в их сыворотках крови IgG-антител к клещевым инфекциям, свидетельствует о широком распространении этих инфекций и, вероятно, о существенной гиподиагностике инфекций, вызываемых <italic>С. </italic><italic>urnetiid</italic>, <italic>Anaplasma phagocytophilum</italic> и <italic>Ehrlichia chaffeensis</italic>/<italic>E. muris</italic>.</p></trans-abstract><kwd-group xml:lang="en"><kwd>seroprevalence</kwd><kwd>antibodies</kwd><kwd>tick-borne encephalitis</kwd><kwd>Lyme disease</kwd><kwd>human granulocytic anaplasmosis</kwd><kwd>human monocytic ehrlichiosis</kwd><kwd>Q fever</kwd><kwd>European North of Russia</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>серопревалентность</kwd><kwd>антитела</kwd><kwd>клещевой энцефалит</kwd><kwd>болезнь Лайма</kwd><kwd>гранулоцитарный анаплазмоз человека</kwd><kwd>моноцитарный эрлихиоз человека</kwd><kwd>Ку-лихорадка</kwd><kwd>Европейский Север России</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="en">The project has been partially funded by the Norwegian Ministry of Health and Care services, Barents Program</institution></institution-wrap><institution-wrap><institution xml:lang="ru">Проект частично финансируется Норвежским Министерством здравоохранения и социальных служб, Баренц-программой</institution></institution-wrap></funding-source><award-id>B1710</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Гнатив Б.Р., Токаревич Н.К. 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