Press secretary Jen Psaki said in a statement Monday night that the staff member tested positive earlier in the day. Psaki says the staff member spent about 30 minutes around the president on Air Force One on Friday during a trip from Orange, South Carolina, to Philadelphia.
Psaki says the staff member is fully vaccinated and boosted and tested negative before boarding Air Force One. She says the staffer began experiencing symptoms Sunday night.
Psaki says the 79-year-old Biden is tested regularly for the virus and has had two negative tests since Sunday. She says he will be tested again Wednesday.