Keywords: SARS-CoV-2; Omicron variants; superspreading events; transmission heterogeneity EN SARS-CoV-2 Omicron variants superspreading events transmission heterogeneity 1 3 3 09/21/22 20220801 NES 220801 Although COVID-19 transmission dynamics are often heterogeneous, that is, only a small fraction of cases can generate unusual large outbreaks (i.e. superspreading), little is known about the superspreading potential of Omicron variant. We assessed the superspreading potential of COVID-19 outbreak seeded by the Omicron variants, using two observed transmission chains in Hong Kong. [Extracted from the article]