My nephew just caught COVID, after having been vaccinated. He got the JJ vaccine about the middle of March. He and his wife just started sending their daughter to preschool and it is likely she brought it home. She's fine, wife is fine, he's quarantining in his man cave. Amazon Fire Stick streaming, full living quarters with bedroom, living room, full bath and completely stocked bar. And him too sick to enjoy it. Fever, headache, chills, muscle pain, the whole schmear.
Vaccination is not a magic shield. I'll be wearing my mask for a while even though I'm vaccinated