Let's say you have a child under 12 and an elderly immune-suppressed person in your house, the first of which can't be vaccinated and the second doesn't have mu

Let's say you have a child under 12 and an elderly immune-suppressed person in your house, the first of which can't be vaccinated and the second doesn't have much of a reaction to the vaccine. You, vaccinated, return to normal, and catch Delta. You are asymptomatic. You go home, and infect the child and the elderly person.