Vaccination against tick-borne encephalitis follows a particular schedule. And what if the vaccination schedule gets mixed up? A vaccination is missed?

Vaccination against tick-borne encephalitis follows a particular schedule: in the first year two vaccinations are given, and a year later, the third. After that immunity is maintained by vaccinating every 3–5 years. The interval depends on the vaccine and the number of doses received. If a person is already receiving, say, their seventh booster, the intervals between vaccinations can be as much as 5 years. The first vaccinations should be given every 3 years. If you were vaccinated with one vaccine three or five years ago, it isn't essential that a few years later you continue with the same manufacturer's vaccine. Any tick-borne encephalitis vaccine triggers the same immune response. The very first doses should be given with the same manufacturer's vaccine; later this isn't important. There are cases where a person receives the first and second vaccinations but forgets the third, has it later than a year afterwards, or doesn't have it at all. Usually, three doses are needed for immune memory to form. Sometimes that memory forms after just two doses. If the third vaccination is forgotten, it's advisable to have a single dose, however much time has passed. Then you should wait a month and have blood tests done, which will show how to proceed – whether to start the vaccination schedule anew or continue as usual. There have been cases where a person had their third vaccination only after five years, but the blood tests showed that immunity had formed. Every body reacts individually.