All currently circulating strains of SARS-COV-2 (i.e., Delta sub-variants) have spike mutations L452R & T478K, disabling most vaccine induced antibodies, & T19R. T19R mutation disrupts epitopes in spike NTD.

NTD-directed antibodies are known to cause ADE.

L452R/Q & T478K have been mutations of concern for many months. Pfizer & Moderna had plenty of time to modify their vaccines and/or make a booster with the new spike mRNA.

The Biden-Harris regime has not demanded that.

It has probably prohibited them from improving the vaccine.

via Science Defies Politics

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September 9, 2021