Tick-borne encephalitis virus (TBEV) antibodies in animal sera – occurrence in goat flocks in Germany, longevity and ability to recall immunological information after more than six years

Table 2 Boost of TBEV-antibody titers (VNT) in pre-immunized goats and sheep^a

time point after last immunization	multiple vaccinated				single vaccinated
time point after last immunization	goat 1	goat 2	sheep 1	sheep 2	goat 3	goat 4	sheep 3	sheep 4
1 week	1:40	1:10	< 1:5	< 1:5	< 1:5	< 1:5	< 1:5	< 1:5
1 month	1:113	1:80	1:160	1:160	1:15	1:7.5	1:10	< 1:5
2 months	1:80	1:28.2	1:15	1:160	1:15	< 1:5	< 1:5	< 1:5
3 months	1:28.2	1:80	1:5	1:28.2	1:7,5	1:5	< 1:5	< 1:5