Signs point to the ceremony to nominate Amy Coney Barrett for the Supreme Court on Sept. 26 as the source of the coronavirus infections afflicting President Donald Trump and many members of his inner circle, including wife Melania, former White House counselor Kellyanne Conway and Trump adviser Chris Christie, former governor of New Jersey.

Though the activity was held outside at the Rose Garden, the majority of the 180-plus people in attendance sat close to each other for an extended period, and most didn’t wear masks. There were smaller indoor gatherings as part of the occasion.

That combination may have resulted in a super spreader event, the type that leads to a cluster of infections. Others at the ceremony who tested positive for the virus include GOP Sens. Mike Lee of Utah and Thom Tillis of North Carolina; John Jenkins, president of Notre Dame University; and a reporter covering the announcement.

Several other persons who have been around the president but did not attend the Rose Garden ceremony also tested positive for the virus last week. They include senior adviser Hope Hicks, Trump campaign manager Bill Stepien and two other journalists who cover the president.