Antipova, A. Yu

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A herd immunity to rubella virus in selected geographical regions

Lavrentieva, I. N.; Bichurina, M. A.; Antipova, A. Yu; Camara, J.; Hoang, M.; Bancević, M. D.; Zheleznova, N. V.; Egorova, S. A.; Totolian, A. A.

(St. Petersburg Pasteur Institute, 2022)

TY  - JOUR
AU  - Lavrentieva, I. N.
AU  - Bichurina, M. A.
AU  - Antipova, A. Yu
AU  - Camara, J.
AU  - Hoang, M.
AU  - Bancević, M. D.
AU  - Zheleznova, N. V.
AU  - Egorova, S. A.
AU  - Totolian, A. A.
PY  - 2022
UR  - http://intor.torlakinstitut.com/handle/123456789/662
AB  - Since 2017, the incidence rate of rubella in the Russian Federation has been below 1 case per million total population. In addition, no circulation of endemic strains of the rubella virus is recorded evidencing about achieving infection elimination phase. In modern conditions, it is important to constantly monitor the level of herd immunity to the rubella virus to identify epidemically significant population groups, especially in countries lacking rubella vaccination or featured with insufficient disease control. Purpose: to study herd immunity to the rubella virus in selected countries in Eurasia and Africa. Materials and methods. Between 2018 and 2021, 15,594 samples of blood sera were tested for IgG and IgM antibodies to the rubella virus from subjects of different ages obtained from regional measles and rubella surveillance centers in the Northwestern Federal District (NWFD) of the Russian Federation, the Republic of Serbia, South Vietnam, and the Republic of Guinea. The “Anti-Rubella Virus ELISA (IgМ)” and “Anti-Rubella Virus ELISA (IgG)” (Euroimmun, Germany) test kits were used. Statistical data processing was carried out using the MS Excel, Prizm 5.0 (GraphPad Software Inc.), and Statistica 8.0 (StatSoft Inc.) software package. Results. During the observation period (2018–2020) the population seroprevalence of the to the rubella virus in the NWFD of the Russian Federation was 96.6–97.7% and fluctuated slightly both in separate years and among individual age groups evidencing about high coverage of rubella vaccination. In the Republic of Serbia conducting two-fold immunization against rubella the overall seroprevalence rate was lower than in the Russian Federation and comprising 86.8%. The minimum number of IgGpositive sera was recorded in the 2–4-year-old age group pointing to the shortcomings of routine vaccination. In South Vietnam, children aged 1–3 years (41.9%) predominated among those recovering from rubella, i.e. the age cohort that should be protected by vaccination at the age of 18 months. No rubella vaccination is carried out in Guinea. The total proportion of seropositive individuals was 75%; herd immunity to the rubella virus was established mainly among children and adolescents, reaching 90% only in the older age group. 30% of unprotected subjects of the most active reproductive age were identified among the females surveyed in Guinea. Conclusion. Insufficient herd immunity to the rubella virus, identified in a number of countries, may contribute to the maintenance of the infectious process and the spread of infection. Globalization contributes to the virus importation into regions being at the stage of measles and rubella elimination. The results obtained suggest about a need to continue efforts aimed at maintaining epidemiological wellbeing regarding rubella in diverse countries of the world.
AB  - Начиная с 2017 г. в Российской Федерации показатель заболеваемости краснухой находится на уровне ниже 1 случая на 1 млн населения. Также отсутствует циркуляция эндемичных штаммов вируса краснухи. Это свидетельствует о достижении фазы элиминации инфекции. В современных условиях важным является постоянный мониторинг уровня коллективного иммунитета к вирусу краснухи для выявления эпидемически значимых групп населения, особенно в странах, где вакцинация против краснухи не проводится или контроль недостаточен. Цель исследования: изучение коллективного иммунитета к вирусу краснухи в ряде стран Евразии и Африки. Материалы и методы. В период с 2017 по 2021 г. на IgG- и IgM-антитела к вирусу краснухи исследовано 15 594 образца сывороток крови лиц разного возраста, полученные из региональных центров по надзору за корью и краснухой в СЗФО РФ, Республике Сербия, в Южном Вьетнаме, в Гвинейской Республике. Использовали ИФА тест-наборы «Anti-Rubella Virus ELISA IgМ» и «Anti-Rubella Virus ELISA (IgG)» (Euroimmun, Германия). Статистическая обработка результатов проводилась с помощью пакета программ MS Excel, Prizm 5.0 (GraphPadSoftware Inc.), Statistica 8.0 (StatSoft Inc.). Результаты. В СЗФО РФ за период наблюдения серопревалентность населения к вирусу краснухи составляла 96,6–97,7% и колебалась незначительно как по отельным годам, так и среди отдельных возрастных групп, что свидетельствуют о высоком охвате вакцинацией против краснухи. В Республике Сербия общий показатель серопревалентности оказался ниже, чем в РФ, и составил 86,8%. Наименьшее количество IgG-положительных сывороток регистрировали в возрастной группе 2–4 года, что говорит о недостатках плановой вакцинации. В Южном Вьетнаме среди переболевших краснухой преобладали дети в возрасте 1–3 года (41,9%), то есть та группа, которая должна быть максимально защищена плановой прививкой против краснухи в 18 месяцев. В Гвинее специфическая профилактика краснухи не проводится. Общая доля серопозитивных лиц составила 75%, коллективный иммунитет к вирусу краснухи формировался, в основном, среди детей и подростков, достигая 90% лишь в старшей возрастной группе. Среди обследованных женщин Гвинеи выявлено 30% незащищенных лиц наиболее активного репродуктивного возраста. Заключение. Недостаточный уровень коллективного иммунитета к вирусу краснухи, выявленный в ряде стран, может способствовать распространению инфекции, а условия глобализации — импортированию вируса в регионы, находящиеся на этапе элиминации кори и краснухи. Полученные результаты свидетельствуют о необходимости продолжения усилий, направленных на поддержание эпидемиологического благополучия в отношении краснухи в разных странах мира.
PB  - St. Petersburg Pasteur Institute
T2  - Russian Journal of Infection and Immunity
T2  - Russian Journal of Infection and Immunity
T1  - A herd immunity to rubella virus in selected geographical regions
EP  - 908
IS  - 5
SP  - 902
VL  - 12
DO  - 10.15789/2220-7619-AHI-2015
ER  - 
@article{
author = "Lavrentieva, I. N. and Bichurina, M. A. and Antipova, A. Yu and Camara, J. and Hoang, M. and Bancević, M. D. and Zheleznova, N. V. and Egorova, S. A. and Totolian, A. A.",
year = "2022",
abstract = "Since 2017, the incidence rate of rubella in the Russian Federation has been below 1 case per million total population. In addition, no circulation of endemic strains of the rubella virus is recorded evidencing about achieving infection elimination phase. In modern conditions, it is important to constantly monitor the level of herd immunity to the rubella virus to identify epidemically significant population groups, especially in countries lacking rubella vaccination or featured with insufficient disease control. Purpose: to study herd immunity to the rubella virus in selected countries in Eurasia and Africa. Materials and methods. Between 2018 and 2021, 15,594 samples of blood sera were tested for IgG and IgM antibodies to the rubella virus from subjects of different ages obtained from regional measles and rubella surveillance centers in the Northwestern Federal District (NWFD) of the Russian Federation, the Republic of Serbia, South Vietnam, and the Republic of Guinea. The “Anti-Rubella Virus ELISA (IgМ)” and “Anti-Rubella Virus ELISA (IgG)” (Euroimmun, Germany) test kits were used. Statistical data processing was carried out using the MS Excel, Prizm 5.0 (GraphPad Software Inc.), and Statistica 8.0 (StatSoft Inc.) software package. Results. During the observation period (2018–2020) the population seroprevalence of the to the rubella virus in the NWFD of the Russian Federation was 96.6–97.7% and fluctuated slightly both in separate years and among individual age groups evidencing about high coverage of rubella vaccination. In the Republic of Serbia conducting two-fold immunization against rubella the overall seroprevalence rate was lower than in the Russian Federation and comprising 86.8%. The minimum number of IgGpositive sera was recorded in the 2–4-year-old age group pointing to the shortcomings of routine vaccination. In South Vietnam, children aged 1–3 years (41.9%) predominated among those recovering from rubella, i.e. the age cohort that should be protected by vaccination at the age of 18 months. No rubella vaccination is carried out in Guinea. The total proportion of seropositive individuals was 75%; herd immunity to the rubella virus was established mainly among children and adolescents, reaching 90% only in the older age group. 30% of unprotected subjects of the most active reproductive age were identified among the females surveyed in Guinea. Conclusion. Insufficient herd immunity to the rubella virus, identified in a number of countries, may contribute to the maintenance of the infectious process and the spread of infection. Globalization contributes to the virus importation into regions being at the stage of measles and rubella elimination. The results obtained suggest about a need to continue efforts aimed at maintaining epidemiological wellbeing regarding rubella in diverse countries of the world., Начиная с 2017 г. в Российской Федерации показатель заболеваемости краснухой находится на уровне ниже 1 случая на 1 млн населения. Также отсутствует циркуляция эндемичных штаммов вируса краснухи. Это свидетельствует о достижении фазы элиминации инфекции. В современных условиях важным является постоянный мониторинг уровня коллективного иммунитета к вирусу краснухи для выявления эпидемически значимых групп населения, особенно в странах, где вакцинация против краснухи не проводится или контроль недостаточен. Цель исследования: изучение коллективного иммунитета к вирусу краснухи в ряде стран Евразии и Африки. Материалы и методы. В период с 2017 по 2021 г. на IgG- и IgM-антитела к вирусу краснухи исследовано 15 594 образца сывороток крови лиц разного возраста, полученные из региональных центров по надзору за корью и краснухой в СЗФО РФ, Республике Сербия, в Южном Вьетнаме, в Гвинейской Республике. Использовали ИФА тест-наборы «Anti-Rubella Virus ELISA IgМ» и «Anti-Rubella Virus ELISA (IgG)» (Euroimmun, Германия). Статистическая обработка результатов проводилась с помощью пакета программ MS Excel, Prizm 5.0 (GraphPadSoftware Inc.), Statistica 8.0 (StatSoft Inc.). Результаты. В СЗФО РФ за период наблюдения серопревалентность населения к вирусу краснухи составляла 96,6–97,7% и колебалась незначительно как по отельным годам, так и среди отдельных возрастных групп, что свидетельствуют о высоком охвате вакцинацией против краснухи. В Республике Сербия общий показатель серопревалентности оказался ниже, чем в РФ, и составил 86,8%. Наименьшее количество IgG-положительных сывороток регистрировали в возрастной группе 2–4 года, что говорит о недостатках плановой вакцинации. В Южном Вьетнаме среди переболевших краснухой преобладали дети в возрасте 1–3 года (41,9%), то есть та группа, которая должна быть максимально защищена плановой прививкой против краснухи в 18 месяцев. В Гвинее специфическая профилактика краснухи не проводится. Общая доля серопозитивных лиц составила 75%, коллективный иммунитет к вирусу краснухи формировался, в основном, среди детей и подростков, достигая 90% лишь в старшей возрастной группе. Среди обследованных женщин Гвинеи выявлено 30% незащищенных лиц наиболее активного репродуктивного возраста. Заключение. Недостаточный уровень коллективного иммунитета к вирусу краснухи, выявленный в ряде стран, может способствовать распространению инфекции, а условия глобализации — импортированию вируса в регионы, находящиеся на этапе элиминации кори и краснухи. Полученные результаты свидетельствуют о необходимости продолжения усилий, направленных на поддержание эпидемиологического благополучия в отношении краснухи в разных странах мира.",
publisher = "St. Petersburg Pasteur Institute",
journal = "Russian Journal of Infection and Immunity, Russian Journal of Infection and Immunity",
title = "A herd immunity to rubella virus in selected geographical regions",
pages = "908-902",
number = "5",
volume = "12",
doi = "10.15789/2220-7619-AHI-2015"
}
Lavrentieva, I. N., Bichurina, M. A., Antipova, A. Y., Camara, J., Hoang, M., Bancević, M. D., Zheleznova, N. V., Egorova, S. A.,& Totolian, A. A.. (2022). A herd immunity to rubella virus in selected geographical regions. in Russian Journal of Infection and Immunity
St. Petersburg Pasteur Institute., 12(5), 902-908.
https://doi.org/10.15789/2220-7619-AHI-2015
Lavrentieva IN, Bichurina MA, Antipova AY, Camara J, Hoang M, Bancević MD, Zheleznova NV, Egorova SA, Totolian AA. A herd immunity to rubella virus in selected geographical regions. in Russian Journal of Infection and Immunity. 2022;12(5):902-908.
doi:10.15789/2220-7619-AHI-2015 .
Lavrentieva, I. N., Bichurina, M. A., Antipova, A. Yu, Camara, J., Hoang, M., Bancević, M. D., Zheleznova, N. V., Egorova, S. A., Totolian, A. A., "A herd immunity to rubella virus in selected geographical regions" in Russian Journal of Infection and Immunity, 12, no. 5 (2022):902-908,
https://doi.org/10.15789/2220-7619-AHI-2015 . .

Rise in 2017-2018 measles morbidity in Serbia and northwest Russia

Stoiljković, Vera; Bichurina, M.A.; Lavrentieva, I.N.; Filipović-Vignjević, Svetlana; Bancević, M.D.; Zheleznova, N.V.; Antipova, A.Yu

(Sankt-Petersburg-Niiem Imeni Pastera, St Petersburg, 2020)

TY  - JOUR
AU  - Stoiljković, Vera
AU  - Bichurina, M.A.
AU  - Lavrentieva, I.N.
AU  - Filipović-Vignjević, Svetlana
AU  - Bancević, M.D.
AU  - Zheleznova, N.V.
AU  - Antipova, A.Yu
PY  - 2020
UR  - http://intor.torlakinstitut.com/handle/123456789/550
AB  - In 2017, the WHO registered 23,927 measles cases in 44 out of 53 countries in the European region. In 2018, measles incidence rate increased up to 82,599 cases registered in 48 countries of the region, with a large number of measles-associated deaths. Overall, 72 measles fatalities were registered in 10 European countries, including Serbia (15 cases). Aim of the study: to characterize 2017-2018 epidemiological upsurge of measles incidence rate observed in the Republic of Serbia (RS) and the Northwestern Federal District (NWFD) of the Russian Federation. Materials and methods. During the 2017-2018 season, 944 serum samples were collected from patients with measles, rubella, or exanthematous diseases in the NWFD and tested in the Laboratory of Virology at the St. Petersburg Regional Centre for Measles Surveillance (SPbRC). In 2017-2018, 2,946 serum samples from the Republic of Serbia were analyzed in the SPbRC by using ELISA with IgM measles test system (Vector-Best, Russia; or Siemens, Germany). Urine and swab samples were examined by RT-PCR and used for isolation and genotyping of measles viruses. Results. From 2017 to 2018, 5,798 measles cases were registered in the RS, among which 2,946 were laboratory-confirmed (serological testing and/or PCR). Unvaccinated subjects or those with unknown vaccination status accounted for majority of the cases. Children under 5 years of age and adults aged 30 years and over dominated among measles patients. During this season, 15 deaths were reported. Several genotypes of measles virus circulated in the RS, e.g. B3 Dublin, D8 Gir Somnath, and D8 Herborn. In 2018, 109 measles cases were recorded in the NWFD, 5 of which were imported from abroad. Among patients, adults comprised 64.2%, wherein 74.3% were covered by unvaccinated subjects or those with unknown vaccination status. Rise in measles incidence rate linked to multiple importations of various measles virus genotypes: B3 Kabul; B3 Dublin; D8 Frankfurt; D8 Cambridge; and D8 Gir Somnath.
PB  - Sankt-Petersburg-Niiem Imeni Pastera, St Petersburg
T2  - Infektsiya I Immunitet
T1  - Rise in 2017-2018 measles morbidity in Serbia and northwest Russia
EP  - 734
IS  - 4
SP  - 729
VL  - 10
DO  - 10.15789/2220-7619-RIM-1342
ER  - 
@article{
author = "Stoiljković, Vera and Bichurina, M.A. and Lavrentieva, I.N. and Filipović-Vignjević, Svetlana and Bancević, M.D. and Zheleznova, N.V. and Antipova, A.Yu",
year = "2020",
abstract = "In 2017, the WHO registered 23,927 measles cases in 44 out of 53 countries in the European region. In 2018, measles incidence rate increased up to 82,599 cases registered in 48 countries of the region, with a large number of measles-associated deaths. Overall, 72 measles fatalities were registered in 10 European countries, including Serbia (15 cases). Aim of the study: to characterize 2017-2018 epidemiological upsurge of measles incidence rate observed in the Republic of Serbia (RS) and the Northwestern Federal District (NWFD) of the Russian Federation. Materials and methods. During the 2017-2018 season, 944 serum samples were collected from patients with measles, rubella, or exanthematous diseases in the NWFD and tested in the Laboratory of Virology at the St. Petersburg Regional Centre for Measles Surveillance (SPbRC). In 2017-2018, 2,946 serum samples from the Republic of Serbia were analyzed in the SPbRC by using ELISA with IgM measles test system (Vector-Best, Russia; or Siemens, Germany). Urine and swab samples were examined by RT-PCR and used for isolation and genotyping of measles viruses. Results. From 2017 to 2018, 5,798 measles cases were registered in the RS, among which 2,946 were laboratory-confirmed (serological testing and/or PCR). Unvaccinated subjects or those with unknown vaccination status accounted for majority of the cases. Children under 5 years of age and adults aged 30 years and over dominated among measles patients. During this season, 15 deaths were reported. Several genotypes of measles virus circulated in the RS, e.g. B3 Dublin, D8 Gir Somnath, and D8 Herborn. In 2018, 109 measles cases were recorded in the NWFD, 5 of which were imported from abroad. Among patients, adults comprised 64.2%, wherein 74.3% were covered by unvaccinated subjects or those with unknown vaccination status. Rise in measles incidence rate linked to multiple importations of various measles virus genotypes: B3 Kabul; B3 Dublin; D8 Frankfurt; D8 Cambridge; and D8 Gir Somnath.",
publisher = "Sankt-Petersburg-Niiem Imeni Pastera, St Petersburg",
journal = "Infektsiya I Immunitet",
title = "Rise in 2017-2018 measles morbidity in Serbia and northwest Russia",
pages = "734-729",
number = "4",
volume = "10",
doi = "10.15789/2220-7619-RIM-1342"
}
Stoiljković, V., Bichurina, M.A., Lavrentieva, I.N., Filipović-Vignjević, S., Bancević, M.D., Zheleznova, N.V.,& Antipova, A.Yu. (2020). Rise in 2017-2018 measles morbidity in Serbia and northwest Russia. in Infektsiya I Immunitet
Sankt-Petersburg-Niiem Imeni Pastera, St Petersburg., 10(4), 729-734.
https://doi.org/10.15789/2220-7619-RIM-1342
Stoiljković V, Bichurina M, Lavrentieva I, Filipović-Vignjević S, Bancević M, Zheleznova N, Antipova A. Rise in 2017-2018 measles morbidity in Serbia and northwest Russia. in Infektsiya I Immunitet. 2020;10(4):729-734.
doi:10.15789/2220-7619-RIM-1342 .
Stoiljković, Vera, Bichurina, M.A., Lavrentieva, I.N., Filipović-Vignjević, Svetlana, Bancević, M.D., Zheleznova, N.V., Antipova, A.Yu, "Rise in 2017-2018 measles morbidity in Serbia and northwest Russia" in Infektsiya I Immunitet, 10, no. 4 (2020):729-734,
https://doi.org/10.15789/2220-7619-RIM-1342 . .
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