Vaccination and tick-borne encephalitis, central Europe

Area of Science:

• Epidemiology
• Public Health
• Vaccinology

Background:

• Tick-borne encephalitis (TBE) poses a significant public health challenge in endemic regions of Europe and Asia.
• Understanding the impact of vaccination programs is crucial for disease control.

Purpose of the Study:

• To evaluate the long-term effect of increased TBE vaccination coverage in Austria.
• To compare TBE incidence trends in Austria with other highly endemic Central European countries.

Main Methods:

• Comparative analysis of TBE incidence rates over 40 years in Austria, the Czech Republic, and Slovenia.
• Assessment of age distribution shifts in TBE patient populations.
• Estimation of TBE cases prevented by vaccination in Austria.

Main Results:

• Austria experienced a substantial decrease in TBE incidence, reaching approximately 16% of pre-vaccination levels.
• High incidence rates persisted in unvaccinated populations.
• The TBE vaccine demonstrated effectiveness across all age demographics.
• An estimated 4,000 TBE cases were prevented in Austria between 2000 and 2011.

Conclusions:

• Mass TBE vaccination campaigns are highly effective in reducing disease incidence.
• Sustained high incidence in unvaccinated groups highlights the importance of continued vaccination efforts.
• TBE vaccination is a critical public health intervention for endemic areas.