On Friday, Joe Biden took part in an event at the White House to celebrate the confirmation of Judge Ketanji Brown Jackson to the Supreme Court. In attendance at the event was Kamala Harris. Harris had been in close contact with her Communications Director Jamal Simmons, who announced on April 6 that he had come down with COVID. Harris said that she would be following “CDC guidance.” CDC guidance says that if you have had that close contact and you are up to date with all your vaccinations, you should wear a well-fitting mask for 10 days.