I've looked online for the answer to this question, but am not turning it up very easily. Say a person has been fully vaccinated (received both doses of one of the vaccines) and then has a close contact with someone who later tests positive. Ordinarily, that close contact would require quarantine per CDC guidelines, but after a person has been vaccinated, would they still be required to quarantine? This is just a hypothetical question at this point, but one that I'm sure many people will be dealing with in the coming months.