Only once in the past ten years was a flu shot at least 50% effective–and that is according to CDC, which has a history of making vaccines appear more effective than they are

Original URL: https://merylnass.substack.com/p/

Only once in the past ten years was a flu shot at least 50% effective–and that is according to CDC, which has a history of making vaccines appear more effective than they are

Non-CDC analyses have concluded that in some years the shot has negative efficacy: those vaccinated are more likely to come down with flu than the unvaccinated

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Meryl Nass
Dec 28, 2025

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