Jen Psaki, the White House press secretary who earlier in the week said that she would not join President Biden on a diplomatic trip to Europe because of a family emergency, said on Sunday that she had tested positive for the coronavirus.
“While I have not had close contact in person with the president or senior members of the White House staff since Wednesday,” Ms. Psaki said, “I am disclosing today’s positive test out of an abundance of transparency. I last saw the president on Tuesday, when we sat outside more than six feet apart, and wore masks.”
Ms. Psaki said that members of her household had tested positive for the virus earlier in the week, and quarantined once she learned that they had contracted the virus. She tested negative on Wednesday, Thursday, Friday and Saturday before testing positive on Sunday. Karine Jean-Pierre, the White House principal deputy press secretary, traveled on the trip while Ms. Psaki stayed home and went into quarantine.
“Thanks to the vaccine, I have only experienced mild symptoms, which has enabled me to continue working from home,” Ms. Psaki said.
The White House did not immediately respond to questions about whether Ms. Psaki had received a booster shot, and did not immediately identify the administration officials she had been in close contact with earlier in the week.
Mr. Biden traveled abroad with a large delegation that included Jake Sullivan, his national security adviser, Antony Blinken, the secretary of state, and several press officials, all of whom have interacted both with White House officials and a large group of journalists traveling with the president.
“I will plan to return to work in person at the conclusion of the 10-day quarantine following a negative rapid test,” Ms. Psaki said, “which is an additional White House requirement, beyond C.D.C. guidance, taken out of an abundance of caution.”
In July, after a White House staff member tested positive for the virus, Ms. Psaki warned that there would be more breakthrough cases and said that precautions were in place to protect the president.