Are the COVID-19's vaccines efficient on the most dangerous variant of SARS-CoV-2?

Clin Exp Vaccine Res · 2021 · PMC8511588 · PMID 34703817

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fairly significantno p-value reported

Based on the assessment the ability of it against Delta variant, researchers have found that Immunogenicity was fairly significant in people under 40 years of age in 98% of cases, but in those over 60 years of age, the success rate was excellent in 93% of cases.

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