Variable spikes in tick-borne encephalitis incidence in 2006 independent of variable tick abundance but related to weather
2008

Weather and Human Behavior Impact Tick-Borne Encephalitis Incidence

Sample size: 41 publication 10 minutes Evidence: moderate

Author Information

Author(s): Sarah E Randolph, Loreta Asokliene, Tatjana Avsic-Zupanc, Antra Bormane, Caroline Burri, Lise Gern, Irina Golovljova, Zdenek Hubalek, Natasa Knap, Maceij Kondrusik, Anne Kupca, Milan Pejcoch, Veera Vasilenko, Milda Žygutiene

Primary Institution: Department of Zoology, University of Oxford

Hypothesis

Is the spike in tick-borne encephalitis (TBE) incidence in 2006 related to weather conditions and human behavior?

Conclusion

The spike in TBE incidence in 2006 was likely due to human behavioral responses to favorable weather rather than changes in tick abundance.

Supporting Evidence

  • In 2006, TBE incidence exceeded average levels for the previous decade by 79–183% in several countries.
  • Countries varied in the degree of TBE spike despite similar weather patterns.
  • Human recreational activities increased during favorable weather, contributing to higher TBE incidence.

Takeaway

In 2006, more people spent time outdoors because of nice weather, which led to more cases of tick-borne encephalitis, even though the number of ticks didn't increase.

Methodology

Field data on tick abundance were collected monthly from 41 sites across eight European countries and analyzed in relation to TBE incidence and weather conditions.

Potential Biases

Potential biases in tick sampling methods and reporting of TBE cases may affect the results.

Limitations

The study's findings may not apply universally due to variations in local conditions and human behavior across different countries.

Participant Demographics

Data collected from eight European countries: Switzerland, Germany, Slovenia, Czechland, Poland, Lithuania, Estonia, and Latvia.

Statistical Information

P-Value

p<0.05

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1186/1756-3305-1-44

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