Corynebacterium propinquum is primarily found in the respiratory tract but has recently been implicated as the causative agent of endocarditis in a pediatric patient with a previous ventricular septum defect as well as a native valve and prosthetic valve infection from two adults. Worldwide, there have been a few cases of respiratory infections as well as acute urethritis.
Corynebacterium propinquum (formerly known as CDC Group ANF-3) grows as a matte non-hemolytic colony on sheep blood agar, and is non-lipophilic, with oxidative metabolism. This isolate grows well at 37°C and is CAMP-negative and nitrate-positive.
17. Erasmus University Medical Center Rottedam. "Corynebacterium propinquum." Microbe Canvas. Permission to use this image has been granted to the author. 2022. Accessed July 28, 2023. https://microbe-canvas.com/Bacteria.php?p=2109
