Citrobacter freundii strain Upstream_1

Citrobacter freundii strain Upstream_1 is a Gram-negative, rod-shaped bacterium that exhibits facultative anaerobic characteristics. This strain is notable for its presence in diverse habitats, including hospital sewage, intestinal tracts, various sewage environments, soil, and surface waters. It possesses flagella, which facilitate motility, allowing it to thrive in these varied environments. This strain has been identified in multiple hosts, including Homo sapiens (humans), various Metazoa, Oryctolagus cuniculus (domestic rabbits), several fish species such as Tilapia and Cyprinus carpio, as well as mammals like Canis lupus familiaris (dogs) and Felis catus (cats). It is also found in amphibians and birds like Struthio camelus (ostrich). Citrobacter freundii strain Upstream_1 is recognized for its role as an opportunistic pathogen, which can lead to infections in both humans and animals. In humans, it is associated with urinary and respiratory tract infections, while in animals, it can cause respiratory tract infections and pleuritis in cats, as well as infections in horses and dogs. Given its wide distribution and association with various hosts, strain Upstream_1 underscores the significance of environmental reservoirs in the propagation of opportunistic infections. Its presence in hospital sewage highlights the potential for transmission in healthcare settings, emphasizing the need for monitoring and control measures to mitigate the risks posed by such opportunistic pathogens.