Eurosurv. Shorter serial intervals in SARS-CoV-2 cases with Omicron BA.1 variant compared with Delta variant, the Netherlands, 13 to 26 December 2021

[tetano]

• Jantien A Backer[SUP]1[/SUP] , Dirk Eggink[SUP]1[/SUP] , Stijn P Andeweg[SUP]1[/SUP] , Irene K Veldhuijzen[SUP]1[/SUP] , Noortje van Maarseveen[SUP]2,3[/SUP] , Klaas Vermaas[SUP]2[/SUP] , Boris Vlaemynck[SUP]4[/SUP] , Raf Schepers[SUP]4[/SUP] , Susan van den Hof[SUP]1[/SUP] , Chantal BEM Reusken[SUP]1[/SUP] , Jacco Wallinga[SUP]1,5[/SUP]

The SARS-CoV-2 Omicron variant has a growth advantage over the Delta variant because of higher transmissibility, immune evasion or shorter serial interval. Using S gene target failure (SGTF) as indication for Omicron BA.1, we identified 908 SGTF and 1,621 non-SGTF serial intervals in the same period. Within households, the mean serial interval for SGTF cases was 0.2–0.6 days shorter than for non-SGTF cases. This suggests that the growth advantage of Omicron is partly due to a shorter serial interval.

full article


https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2022.27.6.2200042#html_fulltext

 

[sharon sanders]

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