If the data below doesn't scream negative efficacy at you, then...

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    If the data below doesn't scream negative efficacy at you, then you need a booster.
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    This is official government data. It's fully substantiated.
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    https://hotcopper.com.au/data/attachments/4019/4019464-04ee0daa8eb79fe7d222917f834362f8.jpg
 
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