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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">rosped</journal-id><journal-title-group><journal-title xml:lang="ru">Российский педиатрический журнал имени М.Я. Студеникина</journal-title><trans-title-group xml:lang="en"><trans-title>M.Ya. Studenikin Russian Pediatric Journal</trans-title></trans-title-group></journal-title-group><publisher><publisher-name>ФГАУ «НМИЦ здоровья детей» Минздрава России</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.46563/1560-9561-2023-26-6-408-413</article-id><article-id custom-type="edn" pub-id-type="custom">lhwonb</article-id><article-id custom-type="elpub" pub-id-type="custom">rosped-379</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>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL INVESTIGATIONS</subject></subj-group></article-categories><title-group><article-title>Характеристика штаммов Streptococcus pneumoniae серотипа 19А, выделенных от детей в Москве в поствакцинальный период (2015–2022 гг.)</article-title><trans-title-group xml:lang="en"><trans-title>Characteristics of Streptococcus pneumoniae strains serotype 19A isolated from children in Moscow during the post-vaccination period (2015–2022)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9365-9143</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алябьева</surname><given-names>Наталья Михайловна</given-names></name><name name-style="western" xml:lang="en"><surname>Alyabyeva</surname><given-names>Nataliya M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Канд. мед. наук, вед. науч. сотр., лаб. экспериментальной иммунологии и вирусологии ФГАУ «НМИЦ здоровья детей» Минздрава России</p><p>e-mail: aliabeva.nm@mail.ru</p></bio><bio xml:lang="en"><p>M.D., Ph.D., leading researcher of the Experimental immunology and virology laboratory of National Medical Research Center for Children’s Health, Moscow, 119991, Russian Federation</p><p>e-mail: aliabeva.nm@mail.ru</p></bio><email xlink:type="simple">aliabeva.nm@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5444-9722</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Комягина</surname><given-names>Татьяна Михайловна</given-names></name><name name-style="western" xml:lang="en"><surname>Komyagina</surname><given-names>Tatiana M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мл. науч. сотр., лаб. экспериментальной иммунологии и вирусологии ФГАУ «НМИЦ здоровья детей» Минздрава России</p><p>e-mail: soledad92@mail.ru</p></bio><email xlink:type="simple">soledad92@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5507-2429</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тряпочкина</surname><given-names>Анастасия Станиславовна</given-names></name><name name-style="western" xml:lang="en"><surname>Tryapochkina</surname><given-names>Anastasiya S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мл. науч. сотр., лаб. экспериментальной иммунологии и вирусологии ФГАУ «НМИЦ здоровья детей» Минздрава России</p><p>e-mail: nastya.tryapochkina@gmail.com</p></bio><email xlink:type="simple">nastya.tryapochkina@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3896-2590</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лазарева</surname><given-names>Анна Валерьевна</given-names></name><name name-style="western" xml:lang="en"><surname>Lazareva</surname><given-names>Anna V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор мед. наук, гл. науч. сотр., зав. лаб. микробиологии ФГАУ «НМИЦ здоровья детей» Минздрава России</p><p>e-mail: lazarevaav@nczd.ru</p></bio><email xlink:type="simple">lazarevaav@nczd.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГАУ «Национальный медицинский исследовательский центр здоровья детей» Минздрава России</institution></aff><aff xml:lang="en"><institution>National Medical Research Center for Children’s Health</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>06</day><month>01</month><year>2024</year></pub-date><volume>26</volume><issue>6</issue><fpage>408</fpage><lpage>413</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Алябьева Н.М., Комягина Т.М., Тряпочкина А.С., Лазарева А.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Алябьева Н.М., Комягина Т.М., Тряпочкина А.С., Лазарева А.В.</copyright-holder><copyright-holder xml:lang="en">Alyabyeva N.M., Komyagina T.M., Tryapochkina A.S., Lazareva A.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://www.rosped.ru/jour/article/view/379">https://www.rosped.ru/jour/article/view/379</self-uri><abstract><sec><title>Введение</title><p>Введение. Внебольничная пневмония (ВП) является ведущей причиной детской смертности и заболеваемости во всём мире. Введение 13-валентной пневмококковой конъюгированной вакцины (ПКВ13), несомненно, хорошо повлияло на заболеваемость ВП. Однако серотип 19А остаётся основной причиной тяжёлых пневмококковых заболеваний как вакцинированных, так и невакцинированных детей.</p></sec><sec><title>Цель работы</title><p>Цель работы: провести анализ клональной эпидемиологии и чувствительности к антибактериальным препаратам штаммов пневмококка серотипа 19А в поствакцинальный период для мониторинга и контроля вакцинации.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В исследование включены 26 изолятов пневмококка серотипа 19А, выделенных в 2015–2022 гг. от детей, получавших стационарную и амбулаторную помощь. Серотипирование проводили с помощью антисывороток и реакции набухания капсулы по Нейфельду. Чувствительность определяли при помощи метода микроразведений. Определяли гены резистентности и проводили мультилокусное сиквенс-типирование методом полимеразной цепной реакции.</p></sec><sec><title>Результаты</title><p>Результаты. К 2019–2022 гг. уровень выявления серотипа 19А уменьшился с 61,5% до 38,5%. Всего было обнаружено 12 различных сиквенс-типов. Большинство изолятов относилось к 2 клональным комплексам: СС230 (n = 15), CC320 (n = 6). Шестнадцать изолятов (61,5%) демонстрировали фенотип множественной лекарственной устойчивости (МЛУ). Преобладал фенотип экстремальной лекарственной устойчивости в комбинации с устойчивостью β/Эри/Кли/ТМП/Tет (43,8%). Основная доля МЛУ-изолятов пневмококков серотипа 19А принадлежала к клональным комплексам СС230 (8/16, 50%), СС320 (6/16, 37,5%) и синглтону 16988 (12,5%).</p></sec><sec><title>Заключение</title><p>Заключение. После внедрения ПКВ13 в динамике наблюдалось уменьшение распространённости серотипа 19А, но доля МЛУ-изолятов этого серотипа продолжала увеличиваться. Эти закономерности подчёркивают необходимость продолжения мониторинга за пневмококковой популяцией в целом и за серотипами, демонстрирующими высокую устойчивость, чтобы снизить риск тяжёлых заболеваний, вызываемых этим микроорганизмом.</p></sec><sec><title>Участие авторов</title><p>Участие авторов:Алябьева Н.М., Лазарева А.В. — концепция и дизайн исследования;Алябьева Н.М., Комягина Т.М., Тряпочкина А.С., Лазарева А.В. — сбор и обработка материала;Алябьева Н.М. — статистическая обработка, написание текста;Алябьева Н.М., Лазарева А.В. — редактирование.Все соавторы — утверждение окончательного варианта статьи, ответственность за целостность всех частей статьи.</p></sec><sec><title>Финансирование</title><p>Финансирование. Исследование не имело финансовой поддержки.</p></sec><sec><title>Конфликт интересов</title><p>Конфликт интересов. Авторы заявляют об отсутствии конфликта интересов. </p></sec><sec><title>Поступила 14</title><p>Поступила 14.11.2023Принята к печати 28.11.2023Опубликована 27.12.2023</p></sec><sec><title> </title><p> </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Community-acquired pneumonia (CAP) is a leading cause of children mortality and morbidity worldwide. The introduction of the 13-valent pneumococcal conjugate vaccine (PCV13) had a very good effect on the CAP prevalence. However, serotype 19A remains the leading cause of severe pneumococcal disease in both vaccinated and unvaccinated children.</p></sec><sec><title>The purpose of the work</title><p>The purpose of the work. To analyze the clonal epidemiology and sensitivity to antibacterial drugs of pneumococcus serotype 19A strains in the post-vaccination period for monitoring and control of vaccination.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The study included twenty six isolates of pneumococci serotype 19A isolated in children in Moscow between 2015 and 2022. Serotyping was carried out using the Neufeld capsule swelling test. Sensitivity was determined using the microdilution method. Resistance genes and multilocus sequence typing was performed using the PCR method.</p></sec><sec><title>Results</title><p>Results. By 2019–2022 the detection rate of serotype 19A decreased from 61.5% to 38.5%. A total of 12 different sequence types were identified. Most isolates belonged to 2 clonal complexes: CC230 (n = 15), CC320 (n = 6). Sixteen isolates exhibited a multidrug resistance phenotype (MDR). The dominant phenotype was extremely drug-resistant in the combination of β/Eri/Cli/TMP/Tet (43.8%). The most of MDR isolates belonged to clonal complexes: CC230 (8/16), CC320 (6/16) and Singleton 16988 (12.5%).</p></sec><sec><title>Conclusion</title><p>Conclusion. After the introduction of PCV13, the prevalence of serotype 19A decreased, but MDR isolates of this serotype continued to increase. These results highlight the need for continued monitoring of the pneumococcal population exhibiting high resistance to reduce the risk of severe disease caused by this organism.</p></sec><sec><title>Contribution</title><p>Contribution:Alyabieva N.М., Lazareva A.V. — research concept and design of the study;Alyabieva N.М., Komyagina T.M., Tryapochkina A.S., Lazareva A.V. — collection and processing of material;Alyabieva N.М. — statistical processing, writing the text;Alyabieva N.М., Lazareva A.V. — editing the text.All co-authors — approval of the final version of the article, responsibility for the integrity of all parts of the article.</p></sec><sec><title>Acknowledgment</title><p>Acknowledgment. The study had no sponsorship.</p></sec><sec><title>Conflict of interest</title><p>Conflict of interest. The authors declare no conflict of interest.</p></sec><sec><title>Received</title><p>Received: November 14, 2023Accepted: November 28, 2023Published: December 27, 2023</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>Streptococcus pneumoniae</kwd><kwd>серотип 19A</kwd><kwd>вакцинация</kwd><kwd>полисахаридные конъюгированные вакцины</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Streptococcus pneumoniae</kwd><kwd>serotype 19A</kwd><kwd>vaccination</kwd><kwd>polysaccharide conjugate vaccines</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">Short K.R., Diavatopoulos D.A. Chapter 15 – Nasopharyngeal colonization with Streptococcus pneumoniae. In: Brown J., Hammerschmidt S., Orihuela C., eds. Streptococcus Pneumoniae. Molecular Mechanisms of Host-Pathogen Interactions. 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