Another lawyer on the Trump team, Jenna Ellis, tests positive for the virus.

Jenna Ellis, a senior legal adviser to President Trump, has tested positive for the coronavirus, according to a White House official familiar with the situation. She is the latest in a string of officials connected to Mr. Trump who have tested positive.

Ms. Ellis has appeared in recent weeks alongside Rudolph W. Giuliani and other Trump lawyers — a group Ms. Ellis has described as an “elite strike-force team” — at public hearings where she amplified the president’s false claims of widespread voter fraud.

Mr. Giuliani, the lead lawyer for the president’s efforts to overthrow the results of the election, confirmed over the weekend that he had tested positive for the virus, and a person who was aware of his condition but not authorized to speak publicly said then that he had been hospitalized at Georgetown University Medical. At age 76, Mr. Giuliani is in a high-risk category. Mr. Trump said on Monday that he had spoken to Mr. Giuliani and he was doing “very well.”

Ms. Ellis was photographed last week, on Wednesday, sitting next to Mr. Giuliani during a hearing before the Michigan House Oversight Committee. It was not immediately clear whether she had any symptoms, or what kind of test she had taken. Ms. Ellis continued to post to Twitter throughout the day on Tuesday, including sharing a statement attributed to her and Mr. Giuliani about their legal efforts. She did not respond to a message seeking comment.