Vitamin D 10 x better than Flu Vaccine if you have very low vitamin D – Feb 2017

Vitamin D Is More Effective Than Flu Vaccine, Study Says Mercola

Meta-analysis of 25 randomized controlled trials
Number needed to treat = 4 if vitamin D level had been < 10 ng

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• Measles outbreak in California in 2015 – 1 in 3 was actually a Vaccine outbreak – March 2019