Channel 2’s Brittany Kleinpeter obtained a CDC alert sent to employees, which said staff who work in buildings 16,18, 21, and 24 on the Roybal campus in Atlanta will continue to work remotely beginning Aug. 18 - 22, with the exception of critical workers like lab and animal care staff.

Four CDC workers, who were not authorized to speak publicly, told CBS News under the condition of anonymity that they were "deeply disappointed and frustrated" by an apparent lack of leadership following Friday's shooting​.

After a gunman opened fire on the Centers for Disease Control and Prevention (CDC) campus in Atlanta last week -- forcing hundreds into lockdown, hitting six buildings and killing a police officer -- authorities found he'd been harboring years-long grievances with the COVID-19 vaccine.