Lancet metanalysis shows pts infected w/ SARS-CoV2 are conferred very high degree of re-infx from pre-omicron variants, even after 40 weeks. Protection was lower for omicron BA.1 & declined over time. Protection from severe Dz was high for all variants. https://t.co/RNgYVWQfNo https://t.co/J8U37NYXPP