I am not aware of mandatory vaccinations for anything, and if there is in Austria in the modern world (or past) then I would have to oppose those too owing to the whole bodily autonomy thing. Normally in peacetime there is issues with various hippy mothers, religious weirdos (not Austria but some of the fun ones in the Netherlands actually providing one of the more interesting data sets here), those not trusting of governments and more dodging such things.My body, my choice only applies to things that have no substantive impact on others. Deadly diseases spreading from one person to another immediately takes it out of that category. This is why we already have mandatory vaccinations for other diseases like measles. My body, my choice would however apply to abortion before the fetus is "viable" because there is no living entity being affected other than the woman housing the fetus.
Equally plenty of things we allow have a substantive impact on others - being fat not only hurts my eyeballs but my insurance premiums, my companies (unhealthy people get sick more often and are generally less productive by virtue of having to stop and take a breather/rest their knee that the mass above caused to grind away), ditto smoking, ditto drunks, ditto having kids you can't afford (which is also one of the other very big aspects in the debate for abortions where that is a thing -- mostly the US, Ireland and Poland. Kids you can't afford generally taking up my prisons, my welfare, my morgues when they blow their brains out...), as might driving faster than about walking pace (though that is less chemicals and autonomy I suppose).
There is scope to violate it -- if something like measles (R numbers vary but leave kung flu in the dust) ganged up with ebola or sleeping sickness (basically 100% fatal), maybe gaining something fun with infectious and asymptomatic phases whilst also somehow having a vaccination then "fuck you it is happening" becomes a more reasonable proposition. For something as comparatively mild as this then violating bodily autonomy is a massive stretch from where I sit.