By a journey to Austria on 6 months or longer recommend protection against the following infections:

Diphtheria
Diphtheria is a serious throat infection, which infects from person-to-person through the air. The vaccination should be less than 10 years old otherwise a booster is needed.
Read more about diphteria here.

Tetanus
Tetanus is a complication to wounds contaminated by soil. If there has been a vaccination within the past 10 years it is not necessary to give a booster in case of wounds and accidents. Tetanus vaccinations are usually given in combination with diphtheria vaccine. If you are previously vaccinated, the vaccine can be given right up to departure.

Tickborne encephalitis
Tickborne encephalitis, TBE, also known as is a Central European encephalitis is a virus infection, which infects man through a tick bite, from early spring to late autumn. The vaccination consists of 3 injections, and protects for at least 3 years.
Read more about tick borne encephalitis here.

Recommended vaccinations Starting Diphtheria 1 day Tetanus 1 day Tickborne encephalitis 4 weeks 4 weeks When to start vaccinations before leaving::