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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">epidemiology</journal-id><journal-title-group><journal-title xml:lang="ru">Эпидемиология и Вакцинопрофилактика</journal-title><trans-title-group xml:lang="en"><trans-title>Epidemiology and Vaccinal Prevention</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-3046</issn><issn pub-type="epub">2619-0494</issn><publisher><publisher-name>«Numicom» LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31631/2073-3046-2020-19-6-69-73</article-id><article-id custom-type="elpub" pub-id-type="custom">epidemiology-1127</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>ПРАКТИЧЕСКИЕ АСПЕКТЫ ЭПИДЕМИОЛОГИИ И ВАКЦИНОПРОФИЛАКТИКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PRACTICAL ASPECTS OF EPIDEMIOLOGY AND VACCINE PREVENTION</subject></subj-group></article-categories><title-group><article-title>Эпидемиологическое значение бессимптомных носителей COVID-19</article-title><trans-title-group xml:lang="en"><trans-title>Epidemiological Significance of Asymptomatic Carriers of COVID-19</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5695-6752</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Базыкина</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bazykina</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Базыкина Елена Анатольевна - младший научный сотрудник Хабаровского НИИ эпидемиологии и микробиологии.Хабаровск.Тел. +7 (4212) 46-18-55</p></bio><bio xml:lang="en"><p>Bazykina Elena A. - junior research of Khabarovsk research institute of epidemiology and microbiology.Khabarovsk.Tel. +7 (4212) 46-18-55</p></bio><email xlink:type="simple">alyonaf@yandex.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/0000-0003-3050-4472</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Троценко</surname><given-names>О. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Trotsenko</surname><given-names>O. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Троценко Ольга Евгеньевна – доктор медицинских наук, директор Хабаровского НИИ эпидемиологии и микробиологии.Хабаровск.Тел. +7(4212)32-52-28</p></bio><bio xml:lang="en"><p>Olga E. Trotsenko - Dr. Sci. (Med.), director of Khabarovsk research institute of epidemiology and microbiology.Khabarovsk.Tel. +7 (4212) 32-52-28</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Хабаровский научно-исследовательский институт эпидемиологии и микробиологии Роспотребнадзора</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Khabarovsk research institute of epidemiology and microbiology of the Federal service for surveillance on consumers rights protection and human wellbeing</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>13</day><month>01</month><year>2021</year></pub-date><volume>19</volume><issue>6</issue><fpage>69</fpage><lpage>73</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Базыкина Е.А., Троценко О.Е., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Базыкина Е.А., Троценко О.Е.</copyright-holder><copyright-holder xml:lang="en">Bazykina E.A., Trotsenko O.E.</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.epidemvac.ru/jour/article/view/1127">https://www.epidemvac.ru/jour/article/view/1127</self-uri><abstract><p>Актуальность. Пандемия новой коронавирусной инфекции является серьезным испытанием для мировой системы здравоохранения, а контроль за развитием эпидемического процесса одна из главных задач в борьбе с COVID-19. Цель. По данным зарубежной литературы оценить роль бессимптомных носителей COVID-19 в эпидемическом процессе новой коронавирусной инфекции. Выводы. Показано менее стойкое формирование иммунного ответа у лиц с бессимптомной формой заболевания по сравнению клиническими формами инфекции COVID-19. Для выяснения аспектов патогенетического процесса и установления реальной стойкости иммунного ответа помимо исследования гуморального иммунного ответа целесообразно изучение клеточного звена иммунитета, в особенности клеток памяти у лиц, перенесших COVID-19. С целью подбора наиболее оптимальных противоэпидемических мер для сдерживания дальнейшего распространения заболевания, в том числе бессимптомного носительства необходимо установление индекса репродукции и определение минимальной инфицирующей дозы SARS-CoV-2. </p></abstract><trans-abstract xml:lang="en"><p>Relevance. Pandemic of the new coronavirus infection has become a challenging issue for world healthcare system. Control of the epidemic process is one of the main priorities in combat against new coronavirus disease Aim. The research highlights the issue of asymptomatic carriers of the new coronavirus disease. Conclusions. It was revealed that patients with asymptomatic form of COVID-19 have a less lasting immunity response compared with those that have had clinically active forms of the infection. In order to determine pathogenetic process and fully understand formation of the immune response, it is necessary to study both humoral and cellular immune responses in patients diagnosed with COVID-19. In order to select most optimal anti-epidemic measures to contain the further spread of the disease, including asymptomatic carriage, it is necessary to establish SARS-CoV-2 reproduction index and determine minimal infective dose of SARS-CoV-2.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>SARS-CoV-2</kwd><kwd>бессимптомное носительство</kwd><kwd>эпидемиология</kwd><kwd>пандемия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>SARS-CoV-2</kwd><kwd>asymptomatic carriers</kwd><kwd>epidemiology</kwd><kwd>pandemic</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">Al-Tawfiq JA. Asymptomatic coronavirus infection: MERS-CoV and SARS-CoV-2 (COVID-19). Travel Med Infect Dis. 2020;35:101608. doi:10.1016/j.tmaid.2020.101608.</mixed-citation><mixed-citation xml:lang="en">Al-Tawfiq JA. Asymptomatic coronavirus infection: MERS-CoV and SARS-CoV-2 (COVID-19). Travel Med Infect Dis. 2020;35:101608. doi:10.1016/j.tmaid.2020.101608.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Lai CC, Liu YH, Wang CY, et al. Asymptomatic carrier state, acute respiratory disease, and pneumonia due to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2): Facts and myths. J Microbiol immunol infect. 2020;53(3):404-412. doi:10.1016/j.jmii.2020.02.012.</mixed-citation><mixed-citation xml:lang="en">Lai CC, Liu YH, Wang CY, et al. Asymptomatic carrier state, acute respiratory disease, and pneumonia due to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2): Facts and myths. J Microbiol immunol infect. 2020;53(3):404-412. doi:10.1016/j.jmii.2020.02.012.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Gao Z, Xu Y, Sun C, et al. A Systematic Review of Asymptomatic Infections with COVID-19. J Microbiol Immunol Infect. 2020;10.1016/j.jmii.2020.05.001. doi:10.1016/j.jmii.2020.05.001</mixed-citation><mixed-citation xml:lang="en">Gao Z, Xu Y, Sun C, et al. A Systematic Review of Asymptomatic Infections with COVID-19. J Microbiol Immunol Infect. 2020;10.1016/j.jmii.2020.05.001. doi:10.1016/j.jmii.2020.05.001</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Wu ZY. Contribution of asymptomatic and pre-symptomatic cases of COVID-19 in spreading virus and targeted control strategies. Zhonghua Liu Xing Bing Xue Za Zhi. 2020;41(6):801-805. Chinese. doi: 10.3760/cma.j.cn112338-20200406-00517. PMID: 32274917.</mixed-citation><mixed-citation xml:lang="en">Wu ZY. Contribution of asymptomatic and pre-symptomatic cases of COVID-19 in spreading virus and targeted control strategies. Zhonghua Liu Xing Bing Xue Za Zhi. 2020;41(6):801-805. Chinese. doi: 10.3760/cma.j.cn112338-20200406-00517. PMID: 32274917.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Wu Z, McGoogan JM. Asymptomatic and Pre-Symptomatic COViD-19 in China. infect Dis Poverty. 2020;9(1):72. doi:10.1186/s40249-020-00679-2.</mixed-citation><mixed-citation xml:lang="en">Wu Z, McGoogan JM. Asymptomatic and Pre-Symptomatic COViD-19 in China. infect Dis Poverty. 2020;9(1):72. doi:10.1186/s40249-020-00679-2.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Huff HV, Singh A. Asymptomatic transmission during the COViD-19 pandemic and implications for public health strategies. Clin infect Dis. 2020;ciaa654. doi:10.1093/cid/ciaa654.</mixed-citation><mixed-citation xml:lang="en">Huff HV, Singh A. Asymptomatic transmission during the COViD-19 pandemic and implications for public health strategies. Clin infect Dis. 2020;ciaa654. doi:10.1093/cid/ciaa654.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Lin C, Ding Y, Xie B, et al. Asymptomatic novel coronavirus pneumonia patient outside Wuhan: The value of CT images in the course of the disease. Clin imaging. 2020;63:7-9. doi:10.1016/j.clinimag.2020.02.008.</mixed-citation><mixed-citation xml:lang="en">Lin C, Ding Y, Xie B, et al. Asymptomatic novel coronavirus pneumonia patient outside Wuhan: The value of CT images in the course of the disease. Clin imaging. 2020;63:7-9. doi:10.1016/j.clinimag.2020.02.008.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Castanheira J, Mascarenhas Gaivao A, Mairos Teixeira S, et al. Asymptomatic COViD-19 positive patient suspected on FDG-PET/CT. Nucl Med Commun. 2020;41(6):598-599. doi:10.1097/MNM.0000000000001221.</mixed-citation><mixed-citation xml:lang="en">Castanheira J, Mascarenhas Gaivao A, Mairos Teixeira S, et al. Asymptomatic COViD-19 positive patient suspected on FDG-PET/CT. Nucl Med Commun. 2020;41(6):598-599. doi:10.1097/MNM.0000000000001221.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Albano D, Bertagna F, Bertoli M, et al. incidental Findings Suggestive of COVID-19 in Asymptomatic Patients Undergoing Nuclear Medicine Procedures in a High-Prevalence Region. J Nucl Med. 2020;61(5):632-636. doi:10.2967/jnumed.120.246256.</mixed-citation><mixed-citation xml:lang="en">Albano D, Bertagna F, Bertoli M, et al. incidental Findings Suggestive of COVID-19 in Asymptomatic Patients Undergoing Nuclear Medicine Procedures in a High-Prevalence Region. J Nucl Med. 2020;61(5):632-636. doi:10.2967/jnumed.120.246256.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Meng H, Xiong R, He R, et al. CT imaging and clinical course of asymptomatic cases with COViD-19 pneumonia at admission in Wuhan, China. J infect. 2020;81(1):e33-e39. doi:10.1016/j.jinf.2020.04.004.</mixed-citation><mixed-citation xml:lang="en">Meng H, Xiong R, He R, et al. CT imaging and clinical course of asymptomatic cases with COViD-19 pneumonia at admission in Wuhan, China. J infect. 2020;81(1):e33-e39. doi:10.1016/j.jinf.2020.04.004.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Yu X, Yang R. COViD-19 transmission through asymptomatic carriers is a challenge to containment. influenza Other Respir Viruses. 2020;14(4):474-475. doi:10.1111/irv.12743.</mixed-citation><mixed-citation xml:lang="en">Yu X, Yang R. COViD-19 transmission through asymptomatic carriers is a challenge to containment. influenza Other Respir Viruses. 2020;14(4):474-475. doi:10.1111/irv.12743.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Oran DP, Topol EJ. Prevalence of Asymptomatic SARS-CoV-2 infection: A Narrative. Ann intern Med. 2020;M20-3012. doi:10.7326/M20-3012.</mixed-citation><mixed-citation xml:lang="en">Oran DP, Topol EJ. Prevalence of Asymptomatic SARS-CoV-2 infection: A Narrative. Ann intern Med. 2020;M20-3012. doi:10.7326/M20-3012.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Hosoki K, Chakraborty A, Sur S. Molecular mechanisms and epidemiology of COViD-19 from an allergist's perspective. J Allergy C!in immuno!. 2020;S0091-6749(20)30799-5. doi:10.1016/j.jaci.2020.05.033.</mixed-citation><mixed-citation xml:lang="en">Hosoki K, Chakraborty A, Sur S. Molecular mechanisms and epidemiology of COViD-19 from an allergist's perspective. J Allergy C!in immuno!. 2020;S0091-6749(20)30799-5. doi:10.1016/j.jaci.2020.05.033.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Wei L, Lin J, Duan X, et al. Asymptomatic COViD-19 Patients Can Contaminate Their Surroundings: an Environment Sampling Study. mSphere. 2020;5(3):e00442-20. doi:10.1128/mSphere.00442-20.</mixed-citation><mixed-citation xml:lang="en">Wei L, Lin J, Duan X, et al. Asymptomatic COViD-19 Patients Can Contaminate Their Surroundings: an Environment Sampling Study. mSphere. 2020;5(3):e00442-20. doi:10.1128/mSphere.00442-20.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Bai Y, Yao L, Wei T, et al. Presumed Asymptomatic Carrier Transmission of COVID-19. JAMA. 2020;323(14):1406-1407. doi:10.1001/jama.2020.2565;</mixed-citation><mixed-citation xml:lang="en">Bai Y, Yao L, Wei T, et al. Presumed Asymptomatic Carrier Transmission of COVID-19. JAMA. 2020;323(14):1406-1407. doi:10.1001/jama.2020.2565;</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Huang L, Zhang X, Zhang X, et al. Rapid asymptomatic transmission of COViD-19 during the incubation period demonstrating strong infectivity in a cluster of youngsters aged 16-23 years outside Wuhan and characteristics of young patients with COViD-19: A prospective contact-tracing study. J infect. 2020;80(6):e1-e13. doi:10.1016/j.jinf.2020.03.006.</mixed-citation><mixed-citation xml:lang="en">Huang L, Zhang X, Zhang X, et al. Rapid asymptomatic transmission of COViD-19 during the incubation period demonstrating strong infectivity in a cluster of youngsters aged 16-23 years outside Wuhan and characteristics of young patients with COViD-19: A prospective contact-tracing study. J infect. 2020;80(6):e1-e13. doi:10.1016/j.jinf.2020.03.006.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Ye F, Xu S, Rong Z, et al. De!ivery of infection from asymptomatic carriers of COViD-19 in a familial cluster. int J infect Dis. 2020;94:133-138. doi:10.1016/j.ijid.2020.03.042.</mixed-citation><mixed-citation xml:lang="en">Ye F, Xu S, Rong Z, et al. De!ivery of infection from asymptomatic carriers of COViD-19 in a familial cluster. int J infect Dis. 2020;94:133-138. doi:10.1016/j.ijid.2020.03.042.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Pan X, Chen D, Xia Y, et al. Asymptomatic cases in a family cluster with SARS-CoV-2 infection. Lancet Infect Dis. 2020;20(4):410-411. doi:10.1016/S1473-3099(20)30114-6ю</mixed-citation><mixed-citation xml:lang="en">Pan X, Chen D, Xia Y, et al. Asymptomatic cases in a family cluster with SARS-CoV-2 infection. Lancet Infect Dis. 2020;20(4):410-411. doi:10.1016/S1473-3099(20)30114-6ю</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Gao M, Yang L, Chen X, et al. A study on infectivity of asymptomatic SARS-CoV-2 carriers. Respir Med. 2020;169:106026. doi:10.1016/j.rmed.2020.106026</mixed-citation><mixed-citation xml:lang="en">Gao M, Yang L, Chen X, et al. A study on infectivity of asymptomatic SARS-CoV-2 carriers. Respir Med. 2020;169:106026. doi:10.1016/j.rmed.2020.106026</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">He D, Zhao S, Lin Q, et al. The relative transmissibility of asymptomatic COViD-19 infections among close contacts. int J infect Dis. 2020;94:145-147. doi:10.1016/j.ijid.2020.04.034.</mixed-citation><mixed-citation xml:lang="en">He D, Zhao S, Lin Q, et al. The relative transmissibility of asymptomatic COViD-19 infections among close contacts. int J infect Dis. 2020;94:145-147. doi:10.1016/j.ijid.2020.04.034.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Chen Y, Wang A, Yi B, et al. The epidemiological characteristics of infection in close contacts of COViD-19 in Ningbo city. Chin J Epidemiol. 2020:41.</mixed-citation><mixed-citation xml:lang="en">Chen Y, Wang A, Yi B, et al. The epidemiological characteristics of infection in close contacts of COViD-19 in Ningbo city. Chin J Epidemiol. 2020:41.</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Miyamae Y, Hayashi T, Yonezawa H, et al. Duration of viral shedding in asymptomatic or mild cases of novel coronavirus disease 2019 (COVID-19) from a cruise ship: A singlehospital experience in Tokyo, Japan. int J infect Dis. 2020;97:293-295. doi:10.1016/j.ijid.2020.06.020.</mixed-citation><mixed-citation xml:lang="en">Miyamae Y, Hayashi T, Yonezawa H, et al. Duration of viral shedding in asymptomatic or mild cases of novel coronavirus disease 2019 (COVID-19) from a cruise ship: A singlehospital experience in Tokyo, Japan. int J infect Dis. 2020;97:293-295. doi:10.1016/j.ijid.2020.06.020.</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Li W, Su YY, Zhi SS, et al. Viral shedding dynamics in asymptomatic and mildly symptomatic patients infected with SARS-CoV-2. Clin Microbiol infect. 2020;S1198-743X(20)30410-9. doi:10.1016/j.cmi.2020.07.008.</mixed-citation><mixed-citation xml:lang="en">Li W, Su YY, Zhi SS, et al. Viral shedding dynamics in asymptomatic and mildly symptomatic patients infected with SARS-CoV-2. Clin Microbiol infect. 2020;S1198-743X(20)30410-9. doi:10.1016/j.cmi.2020.07.008.</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Wu Z, McGoogan JM. Asymptomatic and Pre-Symptomatic COViD-19 in China. infect Dis Poverty. 2020;9(1):72. doi:10.1186/s40249-020-00679-2.</mixed-citation><mixed-citation xml:lang="en">Wu Z, McGoogan JM. Asymptomatic and Pre-Symptomatic COViD-19 in China. infect Dis Poverty. 2020;9(1):72. doi:10.1186/s40249-020-00679-2.</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">National Health Commission of the People's Republic of China. Update on COVID-19 in China as of 24th hour on April 7,2020. Beijing, China: National Health Commission;2020.</mixed-citation><mixed-citation xml:lang="en">National Health Commission of the People's Republic of China. Update on COVID-19 in China as of 24th hour on April 7,2020. Beijing, China: National Health Commission;2020.</mixed-citation></citation-alternatives></ref><ref id="cit26"><label>26</label><citation-alternatives><mixed-citation xml:lang="ru">Kim GU, Kim MJ, Ra SH, et al. Clinical characteristics of asymptomatic and symptomatic patients with mild COVID-19. Clin Microbiol infect. 2020;26(7):948.e1-948.e3. doi:10.1016/j.cmi.2020.04.040.</mixed-citation><mixed-citation xml:lang="en">Kim GU, Kim MJ, Ra SH, et al. Clinical characteristics of asymptomatic and symptomatic patients with mild COVID-19. Clin Microbiol infect. 2020;26(7):948.e1-948.e3. doi:10.1016/j.cmi.2020.04.040.</mixed-citation></citation-alternatives></ref><ref id="cit27"><label>27</label><citation-alternatives><mixed-citation xml:lang="ru">Pollan M, Pёrez-Gбmez B, Pastor-Barriuso R, et al. Prevalence of SARS-CoV-2 in Spain (ENE-COVID): a nationwide, population-based seroepidemiological study. Lancet. 2020;S0140-6736(20)31483-5. doi:10.1016/S0140-6736(20)31483-5.</mixed-citation><mixed-citation xml:lang="en">Pollan M, Pёrez-Gбmez B, Pastor-Barriuso R, et al. Prevalence of SARS-CoV-2 in Spain (ENE-COVID): a nationwide, population-based seroepidemiological study. Lancet. 2020;S0140-6736(20)31483-5. doi:10.1016/S0140-6736(20)31483-5.</mixed-citation></citation-alternatives></ref><ref id="cit28"><label>28</label><citation-alternatives><mixed-citation xml:lang="ru">Gallian P, Pastorino B, Morel P, et al. Lower prevalence of antibodies neutralizing SARS-CoV-2 in group O French blood. Antiviral Res. 2020;181:104880. doi:10.1016/j.antiviral.2020.104880.</mixed-citation><mixed-citation xml:lang="en">Gallian P, Pastorino B, Morel P, et al. Lower prevalence of antibodies neutralizing SARS-CoV-2 in group O French blood. Antiviral Res. 2020;181:104880. doi:10.1016/j.antiviral.2020.104880.</mixed-citation></citation-alternatives></ref><ref id="cit29"><label>29</label><citation-alternatives><mixed-citation xml:lang="ru">Rivett L, Sridhar S, Sparkes D, et al. Screening of healthcare workers for SARS-CoV-2 highlights the role of asymptomatic carriage in COVID-19 transmission. Elife. 2020;9:e58728. doi:10.7554/eLife.58728.</mixed-citation><mixed-citation xml:lang="en">Rivett L, Sridhar S, Sparkes D, et al. Screening of healthcare workers for SARS-CoV-2 highlights the role of asymptomatic carriage in COVID-19 transmission. Elife. 2020;9:e58728. doi:10.7554/eLife.58728.</mixed-citation></citation-alternatives></ref><ref id="cit30"><label>30</label><citation-alternatives><mixed-citation xml:lang="ru">Korth J, Wilde B, Dolff S, et al. SARS-CoV-2-specific antibody detection in healthcare workers in Germany with direct contact to COVID-19 patients. J Clin Virol. 2020;128:104437. doi:10.1016/j.jcv.2020.104437.</mixed-citation><mixed-citation xml:lang="en">Korth J, Wilde B, Dolff S, et al. SARS-CoV-2-specific antibody detection in healthcare workers in Germany with direct contact to COVID-19 patients. J Clin Virol. 2020;128:104437. doi:10.1016/j.jcv.2020.104437.</mixed-citation></citation-alternatives></ref><ref id="cit31"><label>31</label><citation-alternatives><mixed-citation xml:lang="ru">Schmidt SB, Grdter Boltzmann M, Rollnik JD. Prevalence of serum IgG antibodies against SARS-CoV-2 among clinic staff. PLoS One. 2020;15(6):e0235417. doi:10.1371/journal.pone.0235417.</mixed-citation><mixed-citation xml:lang="en">Schmidt SB, Grdter Boltzmann M, Rollnik JD. Prevalence of serum IgG antibodies against SARS-CoV-2 among clinic staff. PLoS One. 2020;15(6):e0235417. doi:10.1371/journal.pone.0235417.</mixed-citation></citation-alternatives></ref><ref id="cit32"><label>32</label><citation-alternatives><mixed-citation xml:lang="ru">Garcia-Basteiro AL, Moncunill G, Tortajada M, et al. Seroprevalence of antibodies against SARS-CoV-2 among health care workers in a large Spanish reference hospital. Nat Commun. 2020;11(1):3500. doi:10.1038/s41467-020-17318-x.</mixed-citation><mixed-citation xml:lang="en">Garcia-Basteiro AL, Moncunill G, Tortajada M, et al. Seroprevalence of antibodies against SARS-CoV-2 among health care workers in a large Spanish reference hospital. Nat Commun. 2020;11(1):3500. doi:10.1038/s41467-020-17318-x.</mixed-citation></citation-alternatives></ref><ref id="cit33"><label>33</label><citation-alternatives><mixed-citation xml:lang="ru">Corradini P, Gobbi G, de Braud F, et al. Rapid Antibody Testing for SARS-CoV-2 in Asymptomatic and Paucisymptomatic Healthcare Professionals in Hematology and Oncology Units Identifies Undiagnosed Infections. Hemasphere. 2020;4(3):e408. doi:10.1097/HS9.0000000000000408.</mixed-citation><mixed-citation xml:lang="en">Corradini P, Gobbi G, de Braud F, et al. Rapid Antibody Testing for SARS-CoV-2 in Asymptomatic and Paucisymptomatic Healthcare Professionals in Hematology and Oncology Units Identifies Undiagnosed Infections. Hemasphere. 2020;4(3):e408. doi:10.1097/HS9.0000000000000408.</mixed-citation></citation-alternatives></ref><ref id="cit34"><label>34</label><citation-alternatives><mixed-citation xml:lang="ru">Patel MC, Chaisson LH, Borgetti S, et al. Asymptomatic SARS-CoV-2 infection and COVID-19 mortality during an outbreak investigation in a skilled nursing facility. Clin Infect Dis. 2020;ciaa763. doi:10.1093/cid/ciaa763.</mixed-citation><mixed-citation xml:lang="en">Patel MC, Chaisson LH, Borgetti S, et al. Asymptomatic SARS-CoV-2 infection and COVID-19 mortality during an outbreak investigation in a skilled nursing facility. Clin Infect Dis. 2020;ciaa763. doi:10.1093/cid/ciaa763.</mixed-citation></citation-alternatives></ref><ref id="cit35"><label>35</label><citation-alternatives><mixed-citation xml:lang="ru">Gandhi M, Yokoe DS, Havlir DV. Asymptomatic Transmission, the Achilles' Heel of Current Strategies to Control Covid-19. N Engl J Med. 2020;382(22):2158-2160. doi:10.1056/NEJMe2009758.</mixed-citation><mixed-citation xml:lang="en">Gandhi M, Yokoe DS, Havlir DV. Asymptomatic Transmission, the Achilles' Heel of Current Strategies to Control Covid-19. N Engl J Med. 2020;382(22):2158-2160. doi:10.1056/NEJMe2009758.</mixed-citation></citation-alternatives></ref><ref id="cit36"><label>36</label><citation-alternatives><mixed-citation xml:lang="ru">Nahshon C, Bitterman A, Haddad R, et al. Hazardous Postoperative Outcomes of Unexpected COVID-19 Infected Patients: A Call for Global Consideration of Sampling all Asymptomatic Patients Before Surgical Treatment. World J Surg. 2020;44(8):2477-2481. doi:10.1007/s00268-020-05575-2.</mixed-citation><mixed-citation xml:lang="en">Nahshon C, Bitterman A, Haddad R, et al. Hazardous Postoperative Outcomes of Unexpected COVID-19 Infected Patients: A Call for Global Consideration of Sampling all Asymptomatic Patients Before Surgical Treatment. World J Surg. 2020;44(8):2477-2481. doi:10.1007/s00268-020-05575-2.</mixed-citation></citation-alternatives></ref><ref id="cit37"><label>37</label><citation-alternatives><mixed-citation xml:lang="ru">Siracusano G, Pastori C, Lopalco L. Humoral Immune Responses in COVID-19 Patients: A Window on the State of the Art. Front Immunol. 2020;11:1049. doi:10.3389/fimmu.2020.01049.</mixed-citation><mixed-citation xml:lang="en">Siracusano G, Pastori C, Lopalco L. Humoral Immune Responses in COVID-19 Patients: A Window on the State of the Art. Front Immunol. 2020;11:1049. doi:10.3389/fimmu.2020.01049.</mixed-citation></citation-alternatives></ref><ref id="cit38"><label>38</label><citation-alternatives><mixed-citation xml:lang="ru">Long QX, Tang XJ, Shi QL, et al. Clinical and immunological assessment of asymptomatic SARS-CoV-2 infections. Nat Med. 2020;10.1038/s41591-020-0965-6. doi:10.1038/s41591-020-0965-6.</mixed-citation><mixed-citation xml:lang="en">Long QX, Tang XJ, Shi QL, et al. Clinical and immunological assessment of asymptomatic SARS-CoV-2 infections. Nat Med. 2020;10.1038/s41591-020-0965-6. doi:10.1038/s41591-020-0965-6.</mixed-citation></citation-alternatives></ref><ref id="cit39"><label>39</label><citation-alternatives><mixed-citation xml:lang="ru">Choe PG, Kang CK, Suh HJ, et al. Antibody Responses to SARS-CoV-2 at 8 Weeks Postinfection in Asymptomatic Patients. Emerg Infect Dis. 2020;26(10):10.3201/ eid2610.202211. doi:10.3201/eid2610.202211.</mixed-citation><mixed-citation xml:lang="en">Choe PG, Kang CK, Suh HJ, et al. Antibody Responses to SARS-CoV-2 at 8 Weeks Postinfection in Asymptomatic Patients. Emerg Infect Dis. 2020;26(10):10.3201/ eid2610.202211. doi:10.3201/eid2610.202211.</mixed-citation></citation-alternatives></ref><ref id="cit40"><label>40</label><citation-alternatives><mixed-citation xml:lang="ru">Siracusano G, Pastori C, Lopalco L. Humoral Immune Responses in COVID-19 Patients: A Window on the State of the Art. Front Immunol. 2020;11:1049. doi:10.3389/fimmu.2020.01049.</mixed-citation><mixed-citation xml:lang="en">Siracusano G, Pastori C, Lopalco L. Humoral Immune Responses in COVID-19 Patients: A Window on the State of the Art. Front Immunol. 2020;11:1049. doi:10.3389/fimmu.2020.01049.</mixed-citation></citation-alternatives></ref><ref id="cit41"><label>41</label><citation-alternatives><mixed-citation xml:lang="ru">Spiegel, M., Pichlmair, A., Martfnez-Sobrido, L., et al. Inhibition of Beta interferon induction by severe acute respiratory syndrome coronavirus suggests a two-step model for activation of interferon regulatory factor 3. J Virol 2005. 79: 2079-2086.</mixed-citation><mixed-citation xml:lang="en">Spiegel, M., Pichlmair, A., Martfnez-Sobrido, L., et al. Inhibition of Beta interferon induction by severe acute respiratory syndrome coronavirus suggests a two-step model for activation of interferon regulatory factor 3. J Virol 2005. 79: 2079-2086.</mixed-citation></citation-alternatives></ref><ref id="cit42"><label>42</label><citation-alternatives><mixed-citation xml:lang="ru">Gralinski LE, Sheahan TP, Morrison TE, et al. Complement activation contributes to severe acute respiratory syndrome coronavirus pathogenesis. mBio Oct 2018, 9 (5) e01753-18. doi:10.1128/mBio.01753-18.</mixed-citation><mixed-citation xml:lang="en">Gralinski LE, Sheahan TP, Morrison TE, et al. Complement activation contributes to severe acute respiratory syndrome coronavirus pathogenesis. mBio Oct 2018, 9 (5) e01753-18. doi:10.1128/mBio.01753-18.</mixed-citation></citation-alternatives></ref><ref id="cit43"><label>43</label><citation-alternatives><mixed-citation xml:lang="ru">Altmann DM, Boyton RJ. SARS-CoV-2 T cell immunity: Specificity, function, durability, and role in protection. Sci Immunol. 2020;5(49):eabd6160. doi:10.1126/sciimmunol.abd6160.</mixed-citation><mixed-citation xml:lang="en">Altmann DM, Boyton RJ. SARS-CoV-2 T cell immunity: Specificity, function, durability, and role in protection. Sci Immunol. 2020;5(49):eabd6160. doi:10.1126/sciimmunol.abd6160.</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>
