There has been news coverage that Commander Cunningham recently did not receive a promotion.
"If Tim reads this message, we hope you come home soon".
News reports and investigators have said Dr. Cunningham told co-workers February 12 he wasn't feeling well and had been denied a promotion.
Countering reports that Cunningham disappeared after he was allegedly passed over for a promotion, the CDC, through acting director Dr. Anne Schuchat, wrote that the reports are incorrect and that Cunningham was actually given an early promotion to Commander in the summer of 2017.
Cunningham, 35, hasn't been seen or heard from since leaving work sick on Monday, Feb. 12.
Schuchat said that Cunningham was promoted to commander effective July 1 "in recognition of his exemplary performance in the U.S. Public Health Service", a uniformed corps in the Department of Health and Human Services.
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On Tuesday, Atlanta police spokesman D.T. Hannah said in a statement: "We stand behind every statement the Atlanta Police Department made about Dr. Cunningham's employment, as our information came directly from the CDC".
"Dr. Cunningham's colleagues and friends at CDC hope that he is safe", agency spokeswoman Kathy Harben told The Post after his disappearance.
Anyone with information surrounding Timothy Cunningham's disappearance is urged to contact Atlanta police at 404-546-4235.
Cunningham's parents reported him missing on February 16 after they went to his home and found his belongings and vehicle there.
Police didn't find evidence of foul play, and efforts to find him in the woods near his home turned up empty, according to reports. His vehicle, keys, wallet, phone and dog were all at his home.
A reward for information that might point to criminal involvement in Cunningham's disappearance was raised to $15,000 last week. Over and above any of his assignments at CDC, his early promotion within the USPHS reflects his excellence as an officer and an employee.