Genus Calymmatobacterium is a group of gram-negative, rod-shaped bacteria that are commonly found in soil and freshwater environments. Some synonyms for the term Genus Calymmatobacterium include C. hongkongense, C. granulosum, and C. thailandense. These bacteria are known to be opportunistic pathogens, causing infections in immunocompromised individuals. They are primarily associated with respiratory tract infections and may also cause urinary tract infections, wound infections, and septicemia. While some species of Calymmatobacterium are considered potentially pathogenic, they have also been found to exhibit bioremediation properties, aiding in the cleanup of contaminated environments.