I disagree If this variant is mostly asymptomatic, but spreads rapidly, in the vaccinated population, then you would also see higher rates in the vaccinated po

I disagree If this variant is mostly asymptomatic, but spreads rapidly, in the vaccinated population, then you would also see higher rates in the vaccinated population, given that vaccinated people only test after they are notified that they have been in contact with someone who tested positive. This gives a larger window for the virus to spread further among the vaccinated part of the population before containment.