Ecological and epidemiological characteristics of tick-borne encephalitis in St. Petersburg

Here, we provide an analysis on 1996–2016 St. Petersburg tick-borne encephalitis (TBE) epidemiological and ecological data. In particular, two main TBE transmission vectors were observed in St. Petersburg: Ixodes persulcatus Ixodes ricinus. TBE tick contamination was 0.61% as shown by ELISA and poly...

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Autores principales:	E. A. Siuziumova, N. V. Telnova, A. O. Shapar, B. I. Aslanov, N. A. Stoyanova, N. K. Tokarevich
Formato:	article
Lenguaje:	RU
Publicado:	Sankt-Peterburg : NIIÈM imeni Pastera 2020
Materias:	tick-borne encephalitis morbidity ixodic ticks infection prevention st. petersburg Infectious and parasitic diseases RC109-216
Acceso en línea:	https://doaj.org/article/dc15dc739193492fb786545d934171e4
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spelling	oai:doaj.org-article:dc15dc739193492fb786545d934171e42021-11-22T07:09:53ZEcological and epidemiological characteristics of tick-borne encephalitis in St. Petersburg2220-76192313-739810.15789/10.15789/2220-7619-EAE-924https://doaj.org/article/dc15dc739193492fb786545d934171e42020-08-01T00:00:00Zhttps://www.iimmun.ru/iimm/article/view/924https://doaj.org/toc/2220-7619https://doaj.org/toc/2313-7398Here, we provide an analysis on 1996–2016 St. Petersburg tick-borne encephalitis (TBE) epidemiological and ecological data. In particular, two main TBE transmission vectors were observed in St. Petersburg: Ixodes persulcatus Ixodes ricinus. TBE tick contamination was 0.61% as shown by ELISA and polymerase chain reaction data. It is found that number of subjects seeking for medical aid due to tick bites rises, whereas TBE incidence declines. In particular, a mean 1996–2002 vs. 2010–2016 tick-bite incidence rate increased from 141.9 up to 288.9, respectively. Despite that the Leningrad region is a major area for TBE spread, however, a risk of exposure to tick bites as well as TBE infection exists even in the city of St. Petersburg. In connection with this, around 1,000 subjects undergo tick bites within the city limits. Moreover, whereas a 1996–2002 mean TBE incidence rate was 1.66, it decreased in 2010–2016 down to 1.17. A peak TBE incidence was documented in St. Petersburg Kurortny, Pushkinsky and Primorsky districts. In addition, males vs. females suffered from TBE at higher frequency in Russian Federation, with its peak incidence rate being reported in children under 14 that differs St. Petersburg from the most of other regions in the Russian Federation. A seasonal distribution of TBE cases in St. Petersburg does not differ from that one for the remainder of Russian regions, which displays a spring-summer seasonality lasting from April to September. Of note, 1996–2016 St. Petersburg TBE mortality was 1.37%. A coverage of TBE vaccinated population tends to rise but still remains at low level (0.25–0.58%). Lack of reported TBE cases in occupationally threatened human cohorts evidences about efficient preventive measures. Detection of TBE virus-specific serum antibodies in 5.0% apparently healthy and unvaccinated residents in St. Petersburg significantly complements the official TBE recording data and provides a more accurate understanding of its actual spread.E. A. SiuziumovaN. V. TelnovaA. O. ShaparB. I. AslanovN. A. StoyanovaN. K. TokarevichSankt-Peterburg : NIIÈM imeni Pasteraarticletick-borne encephalitismorbidityixodic ticksinfectionpreventionst. petersburgInfectious and parasitic diseasesRC109-216RUInfekciâ i Immunitet, Vol 10, Iss 3, Pp 533-542 (2020)
institution	DOAJ
collection	DOAJ
language	RU
topic	tick-borne encephalitis morbidity ixodic ticks infection prevention st. petersburg Infectious and parasitic diseases RC109-216
spellingShingle	tick-borne encephalitis morbidity ixodic ticks infection prevention st. petersburg Infectious and parasitic diseases RC109-216 E. A. Siuziumova N. V. Telnova A. O. Shapar B. I. Aslanov N. A. Stoyanova N. K. Tokarevich Ecological and epidemiological characteristics of tick-borne encephalitis in St. Petersburg
description	Here, we provide an analysis on 1996–2016 St. Petersburg tick-borne encephalitis (TBE) epidemiological and ecological data. In particular, two main TBE transmission vectors were observed in St. Petersburg: Ixodes persulcatus Ixodes ricinus. TBE tick contamination was 0.61% as shown by ELISA and polymerase chain reaction data. It is found that number of subjects seeking for medical aid due to tick bites rises, whereas TBE incidence declines. In particular, a mean 1996–2002 vs. 2010–2016 tick-bite incidence rate increased from 141.9 up to 288.9, respectively. Despite that the Leningrad region is a major area for TBE spread, however, a risk of exposure to tick bites as well as TBE infection exists even in the city of St. Petersburg. In connection with this, around 1,000 subjects undergo tick bites within the city limits. Moreover, whereas a 1996–2002 mean TBE incidence rate was 1.66, it decreased in 2010–2016 down to 1.17. A peak TBE incidence was documented in St. Petersburg Kurortny, Pushkinsky and Primorsky districts. In addition, males vs. females suffered from TBE at higher frequency in Russian Federation, with its peak incidence rate being reported in children under 14 that differs St. Petersburg from the most of other regions in the Russian Federation. A seasonal distribution of TBE cases in St. Petersburg does not differ from that one for the remainder of Russian regions, which displays a spring-summer seasonality lasting from April to September. Of note, 1996–2016 St. Petersburg TBE mortality was 1.37%. A coverage of TBE vaccinated population tends to rise but still remains at low level (0.25–0.58%). Lack of reported TBE cases in occupationally threatened human cohorts evidences about efficient preventive measures. Detection of TBE virus-specific serum antibodies in 5.0% apparently healthy and unvaccinated residents in St. Petersburg significantly complements the official TBE recording data and provides a more accurate understanding of its actual spread.
format	article
author	E. A. Siuziumova N. V. Telnova A. O. Shapar B. I. Aslanov N. A. Stoyanova N. K. Tokarevich
author_facet	E. A. Siuziumova N. V. Telnova A. O. Shapar B. I. Aslanov N. A. Stoyanova N. K. Tokarevich
author_sort	E. A. Siuziumova
title	Ecological and epidemiological characteristics of tick-borne encephalitis in St. Petersburg
title_short	Ecological and epidemiological characteristics of tick-borne encephalitis in St. Petersburg
title_full	Ecological and epidemiological characteristics of tick-borne encephalitis in St. Petersburg
title_fullStr	Ecological and epidemiological characteristics of tick-borne encephalitis in St. Petersburg
title_full_unstemmed	Ecological and epidemiological characteristics of tick-borne encephalitis in St. Petersburg
title_sort	ecological and epidemiological characteristics of tick-borne encephalitis in st. petersburg
publisher	Sankt-Peterburg : NIIÈM imeni Pastera
publishDate	2020
url	https://doaj.org/article/dc15dc739193492fb786545d934171e4
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Ecological and epidemiological characteristics of tick-borne encephalitis in St. Petersburg

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