Streptococcus suis strain DN13

Streptococcus suis strain DN13 is a Gram-positive, facultative anaerobic bacterium characterized by its cocci shape and chains, pairs, or single cell arrangements. It is non-motile and lacks flagella. This strain is mesophilic, with an optimal growth temperature of 37°C, which is typical for many pathogenic bacteria that infect warm-blooded hosts. S. suis strain DN13 has a specialized habitat and is known to have a free-living biotic relationship. It can infect various hosts, including Homo sapiens (humans), Metazoa, Danio rerio (zebrafish), and Sus scrofa (domestic pigs). The strain is associated with a range of serious health effects, such as endocarditis, meningitis, septicaemia, endophthalmitis, sepsis, arthritis, purulent meningitis, cerebral ischemia, and other streptococcal diseases, indicating its potential as a significant human and veterinary pathogen. The presence of a single membrane and a single replicon suggests a relatively simple cellular organization, which is not uncommon among bacteria. The pathogenicity of S. suis strain DN13, coupled with its ability to infect multiple hosts, highlights its ecological adaptability and potential role in zoonotic disease transmission. Understanding such traits can aid in developing targeted interventions to manage infections caused by this strain in both human and animal populations.