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by geraneum 1694 days ago
That happens in breakthrough infections, and the goal of the vaccine is to reduce the number of breakthroughs, which it does successfully.

From the Lancet study linked in the article:

> The SAR in household contacts exposed to the delta variant was 25% (95% CI 18–33) for fully vaccinated individuals compared with 38% (24–53) in unvaccinated individuals.