Table I.
Anti-TBEV IgG seropositivity rates of blood donors indicating no vaccination against TBEV and no infection with or vaccination against other flaviviruses
| Endemicity | Canton | N. of blood donation sites | Blood donors indicating no TBEV vaccination | TBEV IgG ELISA positive | Prevalence |
|---|---|---|---|---|---|
| Endemic | Aargau | 4 | 88 | 5 | 5.7% |
| Bern | 21 | 863 | 32 | 3.1% | |
| Fribourg | 5 | 120 | 15 | 12.5% | |
| Luzern | 11 | 385 | 20 | 5.2% | |
| Nidwalden | 3 | 140 | 10 | 7.1% | |
| Obwalden | 1 | 31 | 2 | 6.5% | |
| St. Gallen | 1 | 34 | 1 | 2.9% | |
| Solothurn | 1 | 17 | 1 | 5.9% | |
| Uri | 1 | 14 | 1 | 7.1% | |
| Vaud | 5 | 90 | 4 | 4.4% | |
| Border region | Appenzell Ausserrhoden | 1 | 32 | 1 | 3.1% |
| Bern | 2 | 289 | 11 | 3.8% | |
| Basel Land | 1 | 25 | 3 | 12.0% | |
| Basel Stadt | 1 | 616 | 46 | 7.5% | |
| St. Gallen | 4 | 73 | 5 | 6.8% | |
| Thurgau | 1 | 17 | 3 | 17.7% | |
| Vaud | 8 | 682 | 38 | 5.6% | |
| Non-endemic | Appenzell Innerhoden | 1 | 39 | 4 | 10.3% |
| Appenzell Ausserrhoden | 2 | 45 | 2 | 4.4% | |
| Genève | 1 | 1 | 0 | 0.0% | |
| Graubünden | 1 | 20 | 2 | 10.0% | |
| St. Gallen | 7 | 499 | 34 | 6.8% | |
| Ticino | 17 | 82 | 32 | 3.8% | |
| Vaud | 24 | 1,271 | 39 | 3.1% |