A fourth COVID-19 booster mRNA vaccine has proven ineffective against Omicron infection, according to preliminary research from Israel released on Monday.
“Despite a significant increase in antibodies after the fourth vaccine, this protection is only partially effective against the Omicron strain, which is relatively resistant to the vaccine,” lead researcher Prof Gili Regev-Yochay, told a media briefing on Monday.
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ISRAEL: Fourth COVID booster found to be ineffective
American Buddhist Net 