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Comparison of daily growth rates of all Omicron lineages and Delta. Rates were estimated with multinomial logistic regression models based on South African SARS-CoV-2 genomic data spanning the period of 1 November 2021 to 19 May 2022. Negative values indicate the comparative lineage to have a growth advantage over the reference lineage, whereas a positive value indicates the reference lineage to have a growth rate advantage over the lineage of comparison
