On Sunday, CNN reported that the CDC held a video conference with approximately 800 staff members to discuss the traumatic event and allow them to ask questions. Staff said they felt like "sitting ducks" as bullets whizzed just over their cubicle walls and they dove for the floor.

The gunman in Friday's deadly shooting outside the Centers for Disease Control and Prevention headquarters had become fixated and outspoken against the COVID-19 vaccine, according to what his family told police.