武漢株ベースの抗原原罪はオミクロン株複数回感染により緩和されるがmRNAワクチンによる抗原原罪は不活性化ワクチンによるものより緩和されにくいとの中国の論文 Published: 22 November 2023Repeated Omicron exposures override ancestral SARS-CoV-2 immune imprintingAbstractThe continuing emergence of SARS-CoV-2 variants highlights the need to update COVID-19 vaccine compositions. However, immune imprinting induced by vaccination based on the ancestral (hereafter referred to as WT) s