Quote:
Originally Posted by BERNADETTE
Must agree with Kate, that is how I thought it worked though I'm not an expert either. Is it not like the Flu Jab? I thought they both worked on the same principle 
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Problem with the flu jab is that there are many forms of flu .. like thousands of cold viruses and cannot guarantee every form. Oh hek, better back off .. don't wish to give any misinformation like.