Assertion: aluminum's number | /r/HasProperty | guesstimate
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Source sentences:
text: In 2011, Tomljenovic provided evidence suggesting that health authorities and vaccine manufacturers made (as summarized by the reporter) “continuous efforts to withhold critical data on severe adverse reactions and contraindication to vaccinations to both parents and health practitioners in order to reach overall vaccination rates, which they deemed were necessary for ‘herd immunity.’”3 (Herd immunity is a theory that has never been scientifically tested, and the numbers believed needed to be vaccinated to achieve herd protection are a guesstimate, rather than based on science.)