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| Content Provider | Taylor & Francis Online |
|---|---|
| Author | Nurse, Jo Blinova, Olga V. Yurasova, Elena D. Buzinov, Roman V. Boltenkov, Vitaliy P. Tokarevich, Nikolay K. Tronin, Andrey A. |
| Abstract | BackgroundThe increase in tick-borne encephalitis (TBE) incidence is observed in recent decades in a number of subarctic countries. The reasons of it are widely discussed in scientific publications. The objective of this study was to understand if the climate change in Arkhangelsk Oblast (AO) situated in the north of European subarctic zone of Russia has real impact on the northward expansion of Ixodid ticks and stipulates the increase in TBE incidence.MethodsThis study analyzes: TBE incidence in AO and throughout Russia, the results of Ixodid ticks collecting in a number of sites in AO, and TBE virus prevalence in those ticks, the data on tick bite incidence in AO, and meteorological data on AO mean annual air temperatures and precipitations.ResultsIt is established that in recent years TBE incidence in AO tended to increase contrary to its apparent decrease nationwide. In last 10 years, there was nearly 50-fold rise in TBE incidence in AO when compared with 1980–1989. Probably, the increase both in mean annual air temperatures and temperatures during tick active season resulted in the northward expansion of Ixodes Persulcatus, main TBE virus vector. The Ixodid ticks expansion is confirmed both by the results of ticks flagging from the surface vegetation and by the tick bite incidence in the population of AO locations earlier free from ticks. Our mathematical (correlation and regression) analysis of available data revealed a distinct correlation between TBE incidence and the growth of mean annual air temperatures in AO in 1990–2009.ConclusionNot ruling out other factors, we conclude that climate change contributed much to the TBE incidence increase in AO. |
| File Format | PDF HTM / HTML |
| ISSN | 16549716 16549880 |
| DOI | 10.3402/gha.v4i0.8448 |
| Journal | Global Health Action |
| Volume Number | 4 |
| Issue Number | 1 |
| Language | English |
| Publisher | Taylor & Francis |
| Publisher Date | 2011-10-21 |
| Access Restriction | Open |
| Subject Keyword | Climate change Tick-borne encephalitis Ixodes persulcatus Subarctic zone |
| Content Type | Text |
| Resource Type | Article |
| Subject | Public Health, Environmental and Occupational Health Health Policy |
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