The Centers for Disease Control and Prevention released a statement Thursday regarding the apparent drowning death of Timothy Cunningham.

“CDR Timothy Cunningham’s colleagues and friends at CDC are deeply saddened to learn of his death. Tim was a treasured member of the CDC family and his work as an epidemiologist was invaluable to CDC’s efforts to protect the health, safety, and security of Americans.

“Tim was a team lead in the Epidemiology and Surveillance Branch of CDC’s Division of Population Health. He also completed CDC’s Epidemic Intelligence Service Officer program. His research has been oriented towards understanding health differences related to race/ethnicity, socioeconomic status, gender, and geography. CDR Cunningham also deployed for numerous public health emergency responses, including Superstorm Sandy, Ebola, and Zika. He served in multiple leadership roles with the Atlanta Commissioned Officers Association.

“Tim’s impact will be felt not only through his significant contributions to CDC’s mission, but also through his influence on the lives of his colleagues and friends. We extend our condolences to his family and loved ones during this difficult time.”

Cunningham, 35, reported to work on Feb. 12, but left early, telling colleagues he did not feel well. Late Tuesday, his body was pulled from the Chattahoochee River.