The data is super thin on that (we don't know very much about people that are getting sick and not seeking care). This article discusses an analysis of househo

The data is super thin on that (we don't know very much about people that are getting sick and not seeking care). This article discusses an analysis of household transmission in Denmark. It was much higher in households with Omicron cases, but lower (56% lower) among boosted individuals compared to two dose vaccination: https://www.reuters.com/business/healthcare-pharmaceuticals/omicron-cannot-escape-t-cells-boosters-protect-households-omicron-2021-12-29/ https://www.reuters.com/business/healthcare-pharmaceuticals/... That's a pretty big reduction.