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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">medalphabet</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинский алфавит</journal-title><trans-title-group xml:lang="en"><trans-title>Medical alphabet</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2078-5631</issn><issn pub-type="epub">2949-2807</issn><publisher><publisher-name>ООО «Альфмед»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33667/2078-5631-2022-6-18-24</article-id><article-id custom-type="elpub" pub-id-type="custom">medalphabet-2559</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Оценка эффективности гуморального иммунного ответа после вакцинации «КовиВаком»</article-title><trans-title-group xml:lang="en"><trans-title>Evaluation of effectiveness of humoral immune response after vaccination with ‘CoviVaс’</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6528-1059</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Казаков</surname><given-names>С. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kazakov</surname><given-names>S. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Казаков Сергей Петрович, д.м.н., доцент, начальник центра клинической лабораторной диагностики – главный лаборант1, зав. кафедрой медицинской биохимии и иммунопатологии Академического образовательного центратрансляционной и фундаментальной медицины2.</p><p>РИНЦ: 5560–3931.</p><p>WoS Researcher ID: C‑6644–2018.</p><p>Scopus ID: 57211351588.</p><p>Москва</p></bio><bio xml:lang="en"><p>Kazakov Sergei P., DM Sci (habil.), associate professor, head of the Centre for Clinical Laboratory Diagnostics – Chief laboratory assistant1, head of Dept of Medical Biochemistry and Immunopathology of Academic Educational Centre for Translationaland Fundamental Medicin2</p><p>Moscow</p></bio><email xlink:type="simple">gvkg.ckld@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>Решетняк</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Reshetnyak</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Решетняк Дмитрий Витальевич, к.м.н., врач клинической лабораторной диагностики Высшей квалификационной категории отделения клинических инфекционно-иммунологических исследований</p><p>Москва</p></bio><bio xml:lang="en"><p>Reshetnyak Dmitry V., PhD Med, doctor of clinical laboratory diagnostics of Supreme expert category at Dept of Clinical and Infectious-Immunological Research of Centre for Clinical Laboratory Diagnostics</p><p>Moscow</p></bio><email xlink:type="simple">dvrld@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Давыдова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Davydova</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Давыдова Наталия Вячеславовна, врач клинической лабораторной диагностики высшей квалификационной категории отделения клинических инфекционно-иммунологических исследований центра клинической лабораторной диагностики</p><p>Москва</p></bio><bio xml:lang="en"><p>Davydova Natalia V., doctor of Clinical Laboratory diagnostics of superior expert category at Dept of Clinical and Infectious-Immunological Research of Centre for Clinical Laboratory Diagnostics</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0542-4278</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Путков</surname><given-names>С. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Putkov</surname><given-names>S. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Путков Станислав Борисович, зав. отделением клинических инфекционноиммунологических исследований, врач клинической лабораторной диагностики центра клинической лабораторной диагностики</p><p>Москва</p></bio><bio xml:lang="en"><p>Putkov Stanislav B., head of Dept, doctor of Clinical Laboratory diagnostics of superior expert category at Dept of Clinical and Infectious-Immunological Research of Centre for Clinical Laboratory Diagnostics</p><p>Moscow</p></bio><email xlink:type="simple">gvkg.ckld@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «Главный военный клинический госпиталь имени академика Н.Н. Бурденко» Минобороны России; ФГБОУ ДПО «Российская медицинская академия непрерывного профессионального образования» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Main Military Clinical Hospital n. a. academician N.N. Burdenko; &#13;
Russian Medical Academy for Continuing Professional Education</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБУ «Главный военный клинический госпиталь имени академика Н.Н. Бурденко» Минобороны России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Main Military Clinical Hospital n. a. academician N.N. Burdenko</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>22</day><month>04</month><year>2022</year></pub-date><volume>1</volume><issue>6</issue><issue-title>Современная лаборатория (1)</issue-title><fpage>18</fpage><lpage>24</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Казаков С.П., Решетняк Д.В., Давыдова Н.В., Путков С.Б., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Казаков С.П., Решетняк Д.В., Давыдова Н.В., Путков С.Б.</copyright-holder><copyright-holder xml:lang="en">Kazakov S.P., Reshetnyak D.V., Davydova N.V., Putkov S.B.</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.med-alphabet.com/jour/article/view/2559">https://www.med-alphabet.com/jour/article/view/2559</self-uri><abstract><p>Значительной проблемой в настоящее время является определение эффективности средств специфической иммунопрофилактики в формировании поствакцинального иммунитета к новой коронавирусной инфекции (НКИ), а также эффективности, то есть выбора методов лабораторной диагностики для адекватной оценки уровня и характера поствакцинального иммунного ответа (ПИО).</p><sec><title>Цель исследования</title><p>Цель исследования. Проведение исследования эффективности гуморального ПИО с выработкой специфических антител у пациентов, вакцинированных «КовиВаком», с использованием полуколичественных и количественных тест-систем отечественного и зарубежного производства.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. У 103 испытуемых, вакцинированных «КовиВаком», на 22–30-е сутки после окончания вакцинации основными иммунохимическими методами (иммуноферментным и иммунохеми-люминесцентным) определялись уровни антител к основным антигенам вируса SARS-CoV‑2 –S-антигену и рецептор-связываюший домен (RBD) S-антигена. Изучался характер и уровень ПИО в отношении выработки этих видов антител и адекватность использованных диагностических методов с определением сходимости результатов, а также их перекрёстной чувствительности и специфичности.</p></sec><sec><title>Результаты</title><p>Результаты. Выявлена недостаточная эффективность ПИО при вакцинации «КовиВаком» в отношении выработки антител к SARSCoV‑2 и достижения их высоких уровней, предположительно, достаточных для формирования стойкого иммунитета к НКИ. Однако при этом установлена высокая корреляция между результатами количественных методов определения антител к S-белку и его RBD вируса SARS-CoV‑2 и достаточно высокая сходимость результатов количественных и полуколичественных методов исследования этих видов антител.</p></sec><sec><title>Вывод</title><p>Вывод. Поствакцинальный иммунный ответ при вакцинации «КовиВаком» характеризуется недостаточной эффективностью в отношении формирования долгоживущих антител IgG к поверхностным антигенам SARS-CoV‑2, особенно в достижении «защитных» уровней этих антител, при этом диагностическая эффективность использованных иммунохимических тест-систем является высокой, а их использование в оценке ПИО при вакцинации «КовиВаком» адекватным.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title> </title><p> </p><p>Determining the efficiency of the principal means of specific immunoprophylaxis in forming thepost-vaccinal immunity against the new coronavirus infection (СOVID‑19) is a very important and topical problem. Solving it involves the evaluation of the efficiency and choosing the laboratory diagnostics technique for an adequate estimation of the nature and the level of thepost-vaccinal immune response (PIR).</p></sec><sec><title>Research objectives</title><p>Research objectives. Evaluating efficiency of the humoral PIR involving theproduction of specific antibodies in patients vaccinated with ‘CoviVac’using quantitative andsemi-quantitative test systems developed by Russian and international companies.</p></sec><sec><title>Material and methods</title><p>Material and methods. The level of antibodies matching the principal known antigens of the SARS-CoV‑2 virus was measured. The probes were taken in a group of 103 persons 22–30 days after vaccination. The techniques used were the principal immunochemical ones (enzymelinkedimmunosorbent assay (ELISA) and chemiluminescent microparticle immunoassay (CMIA)). The nature and the level of the PIR in terms of these antibodies’ production was studied, and the adequacy of the diagnostic techniques applied was evaluated, wherefore the result convergence was studied, and the techniques’ cross-sensitivity and specificity were determined.</p></sec><sec><title>Results</title><p>Results. Insufficient level of PIR in terms of producing antibodies against SARS-CoV‑2 after vaccination with‘CoviVac’was established. The levels of antibodies were found to be not highenough to ensure a reliable immunity against the Covid‑19. However, a highdegree of correlation between the results of different quantitative techniques for measuring theantibodies matching the S-protein and its BRD of the SARS-CoV‑2 virus was determined. Arather high convergence of the results of the quantitative and semi-quantitative techniques usedfor studying this type of antibodies was found.</p></sec><sec><title>Conclusions</title><p>Conclusions. The PR upon the vaccination with the ‘CoviVac’ is characterized by insufficientintensity level in terms of forming the long-living IgG antibodies with surface antigens of SARS-CoV‑2. In particular, the antibody count, which is generally considered capable of ensuringreliable protection, was not reached. Efficiency of the immunochemical testsystems used in this study is high enough and can provide an adequate estimate of the PIR after the vaccination with ‘CoviVac’ .</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>новая коронавирусная инфекция</kwd><kwd>SARS-CoV‑2</kwd><kwd>вакцины</kwd><kwd>«КовиВак»</kwd><kwd>поствакцинальный иммунитет</kwd><kwd>антитела к S-белку</kwd><kwd>антитела к RBD S-белка</kwd><kwd>антитела к N-белку</kwd></kwd-group><kwd-group xml:lang="en"><kwd>COVID‑19</kwd><kwd>SARS-CoV‑2</kwd><kwd>vaccines</kwd><kwd>‘CoviVac’</kwd><kwd>post-vaccinalimmunity</kwd><kwd>antibodies matching the S-protein</kwd><kwd>antibodies matching the RBD of the S-protein</kwd><kwd>antibodies matching the N-protein</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">Временные методические рекомендации «Профилактика, диагностика и лечение новой коронавирусной инфекции (COVID 19)». Версия 14 (27.12.2021). М.: Министерство здравоохранения Российской Федерации; 2021. 232 с.</mixed-citation><mixed-citation xml:lang="en">Interim guidelines "Prevention, diagnosis and treatment of a new coronavirus infection (COVID-19)". Version 14 (12/27/2021). Moscow: Ministry of Health of the Russian Federation; 2021. 232 p.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Извеков А.А., Капто О.В., Хритинин Д.Ф. идр. Применениерефлексотерапевтических методик в лечении транзиторных поствакцинальных реакций после иммунизации от COVID 19. Вестникневрологии, психиатрииинейрохирургии. 2021;(7):504–510.</mixed-citation><mixed-citation xml:lang="en">Izvekov A.A., Kapto O.V., Khritinin D.F., et al. The use of reflexotherapy techniques in the treatment of transient post-vaccination reactions after immunization against COVID 19. Bulletinofneurology, psychiatryandneurosurgery.2021;(7):504–510. https://doi.org/10.33920/med 01–2107–02.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Ignatiev S.A., Alekseev I.B., Kazakov S.P., et al. Some Features of the Development of AMD and Other Diseases of the Posterior Pole Associated with the Virus Carrier and the Novel Coronavirus Disease COVID 19. International Journal of Clinical and Experimental Medical Sciences. 2021;7(5):127–137. https://doi.org/10.11648/j.ijcems.20210705.11</mixed-citation><mixed-citation xml:lang="en">Ignatiev S.A., Alekseev I.B., Kazakov S.P., et al. Some Features of the Development of AMD and Other Diseases of the Posterior Pole Associated with the Virus Carrier and the Novel Coronavirus Disease COVID 19. International Journal of Clinical and Experimental Medical Sciences. 2021;7(5):127–137. https://doi.org/10.11648/j.ijcems.20210705.11</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Logunov D.Y., Dolzhikova I.V., Zubkova O.V., et al. Safety and immunogenicity of an rAd26 and rAd5 vector-based heterologous prime-boost COVID 19 vaccine in two formulations: two open, non-randomised phase 1/2 studies from Russia. Lancet. 2020;396(10255):887–897. https://doi.org/10.1016/S0140–6736(20)31866–3</mixed-citation><mixed-citation xml:lang="en">Logunov D.Y., Dolzhikova I.V., Zubkova O.V., et al. Safety and immunogenicity of an rAd26 and rAd5 vector-based heterologous prime-boost COVID 19 vaccine in two formulations: two open, non-randomised phase 1/2 studies from Russia. Lancet. 2020;396(10255):887–897. https://doi.org/10.1016/S0140–6736(20)31866–3</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Rossi A.H., Ojeda D. S., Varese A., et al. Sputnik V vaccine elicits seroconversion and neutralizing capacity to SARS-CoV 2 after a single dose. Cell Rep Med. 2021;2(8):100359. https://doi.org/10.1016/j.xcrm.2021.100359</mixed-citation><mixed-citation xml:lang="en">Rossi A.H., Ojeda D. S., Varese A., et al. Sputnik V vaccine elicits seroconversion and neutralizing capacity to SARS-CoV 2 after a single dose. Cell Rep Med. 2021;2(8):100359. https://doi.org/10.1016/j.xcrm.2021.100359</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Kozlovskaya L.I., Piniaeva A.N., Ignatyev G.M., et al. Long-term humoral immunogenicity, safety and protective efficacy of inactivated vaccine against COVID 19 (CoviVac) in preclinical studies. Emerg Microbes Infect. 2021;10(1):1790–1806. https://doi.org/10.108 0/22221751.2021.1971569</mixed-citation><mixed-citation xml:lang="en">Kozlovskaya L.I., Piniaeva A.N., Ignatyev G.M., et al. Long-term humoral immunogenicity, safety and protective efficacy of inactivated vaccine against COVID 19 (CoviVac) in preclinical studies. Emerg Microbes Infect. 2021;10(1):1790–1806. https://doi.org/10.108 0/22221751.2021.1971569</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Tukhvatulin A.I., Dolzhikova I.V., Shcheblyakov D.V., et al. An open, non-randomised, phase 1/2 trial on the safety, tolerability, and immunogenicity of single-dose vaccine ‘‘Sputnik Light’’ for prevention of coronavirus infection in healthy adults. The Lancet Regional Health Europe. 2021;11:100241. https://doi.org/10.1016/j.lanepe.2021.100241</mixed-citation><mixed-citation xml:lang="en">Tukhvatulin A.I., Dolzhikova I.V., Shcheblyakov D.V., et al. An open, non-randomised, phase 1/2 trial on the safety, tolerability, and immunogenicity of single-dose vaccine ‘‘Sputnik Light’’ for prevention of coronavirus infection in healthy adults. The Lancet Regional Health Europe. 2021;11:100241. https://doi.org/10.1016/j.lanepe.2021.100241</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Временные методические рекомендации «Порядок проведения вакцинациивзрослого населения против COVID 19». М.: Министерство здравоохраненияРоссийской Федерации, ФГБУ «НМИЦТПМ» Минздрава России; 2021. 65 с.</mixed-citation><mixed-citation xml:lang="en">Interim guidelines "Procedure for vaccination of the adult population against COVID-19". M.: Ministry of Health of the Russian Federation, Federal State Budgetary Institution "NMITsTPM" of the Ministry of Health of Russia; 2021. 65 p</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Shen C., Wang Z., Zhao F., et al. Treatment of 5 Critically Ill Patients WithCOVID 19 With Convalescent Plasma. JAMA. 2020;323(16):1582–1589. https://doi.org/10.1001/jama.2020.4783</mixed-citation><mixed-citation xml:lang="en">Shen C., Wang Z., Zhao F., et al. Treatment of 5 Critically Ill Patients WithCOVID 19 With Convalescent Plasma. JAMA. 2020;323(16):1582–1589. https://doi.org/10.1001/jama.2020.4783</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Казаков С. П., Алимбарова Л. М., Чиркова Е.Ю. идр. Изучениеэффективноститест-системнаосновеиммунохимического метода для определения специфических антител классов JgM, IgG к коронавирусуSARS-CoV 2. Журналинфектологии. 2021;13(1 S1):53–54.</mixed-citation><mixed-citation xml:lang="en">Kazakov S. P., Alimbarova L. M., Chirkova E. Yu., et al. Study of the effectiveness of test systems based on the immunochemical method for the determination of specific antibodies of the JgM, IgG classes to SARS-CoV 2 coronavirus. Journal of Infectology. 2021;13(1 S1):53–54..</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">DomBourian M.G., Annen K., Huey L., Andersen G. Analysis of COVID 19 convalescent plasma for SARS-CoV 2 IgG using two commercial immunoassays.J Immunol Methods. 2020;486:112837. https://doi.org/10.1016/j.jim.2020.112837</mixed-citation><mixed-citation xml:lang="en">DomBourian M.G., Annen K., Huey L., Andersen G. Analysis of COVID 19 convalescent plasma for SARS-CoV 2 IgG using two commercial immunoassays.J Immunol Methods. 2020;486:112837. https://doi.org/10.1016/j.jim.2020.112837</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Meschi S., Colavita F., Bordi L., et al. Performance evaluation of Abbott ARCHITECT SARSCoV 2 IgG immunoassay in comparison with indirect immunofluorescence and virus microneutralization test. J Clin Virol. 2020;129:104539. https://doi.org/10.1016/j.jcv.2020.104539</mixed-citation><mixed-citation xml:lang="en">Meschi S., Colavita F., Bordi L., et al. Performance evaluation of Abbott ARCHITECT SARSCoV 2 IgG immunoassay in comparison with indirect immunofluorescence and virus microneutralization test. J Clin Virol. 2020;129:104539. https://doi.org/10.1016/j.jcv.2020.104539</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">SARS-CoV 2 IgG II – количественныереагентыдля «Architect» (SARS-CoV 2 IgG II Quant Reagent Kit): инструкциядлятест-системыкомпании «Abbott», декабрь 2020 г</mixed-citation><mixed-citation xml:lang="en">SARS-CoV 2 IgG II –kolichestvennyereagentydlya «Architect» (SARS-CoV 2 IgG II Quant Reagent Kit): instruktsiyadlya test-sistemykompanii «Abbott», December 2020.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Feng S., Phillips D.J., White T., et al. Correlates of protection against symptomatic and asymptomatic SARS-CoV 2 infection. Nat Med. 2021;27(11):2032–2040. https://doi. org/10.1038/s41591–021–01540–1</mixed-citation><mixed-citation xml:lang="en">Feng S., Phillips D.J., White T., et al. Correlates of protection against symptomatic and asymptomatic SARS-CoV 2 infection. Nat Med. 2021;27(11):2032–2040. https://doi. org/10.1038/s41591–021–01540–1</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Komissarov A.A., Dolzhikova I.V., Efimov G.A., et al. Boosting of the SARS-CoV 2-specific immune response after vaccination with single-dose Sputnik Light vaccine. MedRxiv. 2021. https://doi.org/10.1101/2021.10.26.21265531</mixed-citation><mixed-citation xml:lang="en">Komissarov A.A., Dolzhikova I.V., Efimov G.A., et al. Boosting of the SARS-CoV 2-specific immune response after vaccination with single-dose Sputnik Light vaccine. MedRxiv. 2021. https://doi.org/10.1101/2021.10.26.21265531</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Xiao A.T., Gao C., Zhang S. Profile of specific antibodies to SARS-CoV 2: The firstreport. J Infect. 2020;81(1):147–178. https://doi.org/10.1016/j.jinf.2020.03.012</mixed-citation><mixed-citation xml:lang="en">Xiao A.T., Gao C., Zhang S. Profile of specific antibodies to SARS-CoV 2: The firstreport. J Infect. 2020;81(1):147–178. https://doi.org/10.1016/j.jinf.2020.03.012</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Ng D.L., Goldgof G.M., Shy B.R., et al. SARS-CoV 2 seroprevalence and neutralizing activity in donor and patient blood. Nat Commun. 2020;11(1):4698. https://doi.org/10.1038/ s41467–020–18468–8</mixed-citation><mixed-citation xml:lang="en">Ng D.L., Goldgof G.M., Shy B.R., et al. SARS-CoV 2 seroprevalence and neutralizing activity in donor and patient blood. Nat Commun. 2020;11(1):4698. https://doi.org/10.1038/ s41467–020–18468–8</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Charlton C.L., Kanji J.N., Johal K., et al. Evaluation of Six Commercial Mid- to High-Volume Antibody and Six Point-of-Care Lateral Flow Assays for Detection of SARS-CoV 2 Antibodies. J ClinMicrobiol. 2020;58(10): e01361–20. https://doi.org/10.1128/JCM.01361–20</mixed-citation><mixed-citation xml:lang="en">Charlton C.L., Kanji J.N., Johal K., et al. Evaluation of Six Commercial Mid- to High-Volume Antibody and Six Point-of-Care Lateral Flow Assays for Detection of SARS-CoV 2 Antibodies. J ClinMicrobiol. 2020;58(10): e01361–20. https://doi.org/10.1128/JCM.01361–20</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Okba N.M.A., Müller M. A., Li W., et al. Severe Acute Respiratory Syndrome Coronavirus 2-Specific Antibody Responses in Coronavirus Disease Patients. EmergInfectDis. 2020;26(7):1467–1488. https://doi.org/10.3201/eid2607.200841</mixed-citation><mixed-citation xml:lang="en">Okba N.M.A., Müller M. A., Li W., et al. Severe Acute Respiratory Syndrome Coronavirus 2-Specific Antibody Responses in Coronavirus Disease Patients. EmergInfectDis. 2020;26(7):1467–1488. https://doi.org/10.3201/eid2607.200841</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Grzelak L., Temmam S., Planchais C., et al. A comparison of four serological assays for detecting anti-SARS-CoV 2 antibodies in human serum samples from different populations. SciTransl Med. 2020;12(559): eabc3103. https://doi.org/10.1126/scitranslmed.abc3103</mixed-citation><mixed-citation xml:lang="en">Grzelak L., Temmam S., Planchais C., et al. A comparison of four serological assays for detecting anti-SARS-CoV 2 antibodies in human serum samples from different populations. SciTransl Med. 2020;12(559): eabc3103. https://doi.org/10.1126/scitranslmed.abc3103</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Luchsinger L.L., Ransegnola B.P., Jin D.K., et al. Serological Assays Estimate Highly Variable SARS-CoV 2 Neutralizing Antibody Activity in Recovered COVID 19 Patients. J ClinMicrobiol. 2020;58(12): e02005–20. https://doi.org/10.1128/JCM.02005–20</mixed-citation><mixed-citation xml:lang="en">Luchsinger L.L., Ransegnola B.P., Jin D.K., et al. Serological Assays Estimate Highly Variable SARS-CoV 2 Neutralizing Antibody Activity in Recovered COVID 19 Patients. J ClinMicrobiol. 2020;58(12): e02005–20. https://doi.org/10.1128/JCM.02005–20</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Joyner M. J., Bruno K. A., Klassen S. A., et al. Safety Update: COVID 19 Convalescent Plasma in 20,000 Hospitalized Patients. Mayo Clin Proc. 2020;95(9):1888–1897. https://doi. org/10.1016/j.mayocp.2020.06.028</mixed-citation><mixed-citation xml:lang="en">Joyner M. J., Bruno K. A., Klassen S. A., et al. Safety Update: COVID 19 Convalescent Plasma in 20,000 Hospitalized Patients. Mayo Clin Proc. 2020;95(9):1888–1897. https://doi. org/10.1016/j.mayocp.2020.06.028</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Khoury D.S., Cromer D., ReynaldiА., et al. Neutralizing antibody levels are highly predictive of immune protection from symptomatic SARS-CoV 2 infection. Nat Med. 2021;27(7):1205– 1211. https://doi.org/10.1038/s41591–021–01377–8</mixed-citation><mixed-citation xml:lang="en">Khoury D.S., Cromer D., ReynaldiА., et al. Neutralizing antibody levels are highly predictive of immune protection from symptomatic SARS-CoV 2 infection. Nat Med. 2021;27(7):1205– 1211. https://doi.org/10.1038/s41591–021–01377–8</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Muecksch F., Wise H., Batchelor B., et al. Longitudinal Serological Analysis and Neutralizing Antibody Levels in Coronavirus Disease 2019 Convalescent Patients. JInfectDis. 2021;223(3):389–398. https://doi.org/10.1093/infdis/jiaa659</mixed-citation><mixed-citation xml:lang="en">Muecksch F., Wise H., Batchelor B., et al. Longitudinal Serological Analysis and Neutralizing Antibody Levels in Coronavirus Disease 2019 Convalescent Patients. JInfectDis. 2021;223(3):389–398. https://doi.org/10.1093/infdis/jiaa659</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">van Kampen J.J.A., van de Vijver D.A.M.C., Fraaij P.L.A., et al. Duration and key determinants of infectious virus shedding in hospitalized patients with coronavirus disease 2019 (COVID 19). Nat Commun. 2021;12(1):267. https://doi.org/10.1038/s41467–020–20568–4</mixed-citation><mixed-citation xml:lang="en">van Kampen J.J.A., van de Vijver D.A.M.C., Fraaij P.L.A., et al. Duration and key determinants of infectious virus shedding in hospitalized patients with coronavirus disease 2019 (COVID 19). Nat Commun. 2021;12(1):267. https://doi.org/10.1038/s41467–020–20568–4</mixed-citation></citation-alternatives></ref><ref id="cit26"><label>26</label><citation-alternatives><mixed-citation xml:lang="ru">Dimeglio C., Herin F., Martin-Blondel G., et al. Antibody titers and protection against a SARSCoV 2 infection. J Infect. 2021 Sep 21: S0163–4453(21)00483–7. https://doi.org/10.1016/j. jinf.2021.09.013</mixed-citation><mixed-citation xml:lang="en">Dimeglio C., Herin F., Martin-Blondel G., et al. Antibody titers and protection against a SARSCoV 2 infection. J Infect. 2021 Sep 21: S0163–4453(21)00483–7. https://doi.org/10.1016/j. jinf.2021.09.013</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
