dont think so wigwam, any injjection of a vacceine can have an effect like any other medication.
i went through my meds a while ago and if you read all the disclaimers on the leaflets in the boxes you would scare yourself silly. thats why they have to go through all the various studies and tests.
somewhere i am sure for each vacceine there will be a list of side effects that they have come accross.
i am sure even the most hard nosed govt wouldnt allow them to be used if there was something dangerous.
from what fwippers and tharg say it seems very similar to the annual flu jab.