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comment by NikolaiFyodorov

    Most people don't seem to know that the J&J covid vax used a viral envelope that much of the population has some immunogenicity against. Nor do they know that the J&J vax was limited to one dose, not because of its superior effectiveness, but because the first dose would raise their immunogenicity such that the second dose would be ineffective and a greater risk of adverse reaction. Also, they can no longer benefit from vaccines or gene therapies that use such an envelope.

I did not know any of that. Thank you for sharing.