In bacteriology, gram-positive bacteria are bacteria that give a positive result in the Gram stain test, which is traditionally used to quickly classify bacteria into two broad categories according to their type of cell wall.
Eggerthella is a bacterial genus of Actinomycetota, in the family Coriobacteriaceae. Members of this genus are anaerobic, non-sporulating, non-motile, Gram-positive bacilli that grow singly, as pairs, or in short chains. They are found in the human colon and feces and have been implicated as a cause of ulcerative colitis, liver and anal abscesses and systemic bacteremia.
The Chloroflexota are a phylum of bacteria containing isolates with a diversity of phenotypes, including members that are aerobic thermophiles, which use oxygen and grow well in high temperatures; anoxygenic phototrophs, which use light for photosynthesis ; and anaerobic halorespirers, which uses halogenated organics as electron acceptors.
Laribacter hongkongensis is a species of bacteria. It is facultatively anaerobic, non-sporulating, gram-negative, seagull- or spiral rod-shaped. It is a potential human pathogen. Laribacter hongkongensis has been isolated from human cases of diarrhea, but its role in causing diarrhea is unproven, even though it has been hypothesized. Additional studies are needed to better define its role as a possible enteric pathogen. These should include: case control studies designed to differentiate infection from colonization-transient passage, fulfilling Koch's postulates and Bradford-Hill's criteria on association vs. causation, possible virulence factors, animal models, host factors, antibody responses based on serodiagnostic testing, and human volunteer studies. The lessons learned from trying to establish the etiological role of the bacteria genera Aeromonas, Plesiomonas, and Edwardsiella in human diarrhea seem especially applicable for Laribacter. All four genera are isolated from extraintestinal infections, are apparently found in the aquatic environment, and epidemiological associations include eating fish and foreign travel. Even after over 50 years’ experience with the former three genera their etiological role in an individual case of human diarrhea is difficult to determine without extensive studies. For all four of these genera the critical issue will be differentiating infection from colonization or transient passage in the intestine.
Alkanindiges hongkongensis is a gram-negative, aerobic, nonmotile bacterium of the genus Alkanindiges, which was isolated from the parotid abscess of a patient.
Tsukamurella inchonensis is a bacterium with type strain IMMIB D-771T.
Laribacter is a bacterial genus in the family of Neisseriaceae. Laribacter hongkongensis is the only species in the genus, and it has been isolated from human cases of diarrhea. However, its role in causing diarrhea is unproven, even though it has been hypothesized.
Tsukamurella is a Gram-positive, non-spore-forming, rod-shaped and obligate aerobic bacterial genus from the family of Tsukamurellaceae. Most of the strains of Tsukamurella degrade starch. Some Tsukamurella species can cause infections in humans.
Tsukamurella pseudospumae is a bacterium from the genus Tsukamurella which has been isolated from activated sludge foam from an activated sludge treatment plant in England.
Tsukamurella pulmonis is a Gram-positive and aerobic bacterium from the genus Tsukamurella which has been isolated from the sputum from a patient with lung tuberculosis in Germany.
Tsukamurella sinensis is a bacterium from the genus of Tsukamurella which has been isolated from a patient from the Queen Mary Hospital in Hong Kong.
Tsukamurella soli is a Gram-positive and rod-shaped bacterium from the genus of Tsukamurella which has been isolated from forest soil from the Hallasan mountain on the Jeju island in Korea.
Tsukamurella spumae is a bacterium from the genus of Tsukamurella which has been isolated from foam from an activated sludge plant in England.
Tsukamurella tyrosinosolvens is a Gram-positive and aerobic bacterium from the genus Tsukamurella. Tsukamurella tyrosinosolvens bacteria can cause in rare cases infections in humans.
Anaerospora is a Gram-negative genus of bacteria from the family of Sporomusaceae with one known species.
Limimaricola hongkongensis is a Gram-negative, non-spore-forming, short rod-shaped and non-motile bacterium from the genus of Limimaricola which has been isolated from biofilm from Hong Kong.
Tsukamurella hominis is a Gram-positive, non-spore-forming and non-motile bacterium from the genus of Tsukamurella which has been isolated from a conjunctival swab.
Tsukamurella serpentis is a bacterium from the genus of Tsukamurella which has been isolated from the mouth of the snake Naja atra from the Queen Mary Hospital in Hong Kong.
Christensenella hongkongensis is a species of clinically relevant gram-positive coccobacilli, first isolated from patients in Hong Kong and Canada in 2006. Although the species remains relatively rare, it has a high mortality rate of up to 50%. Christensenella is thought to be broadly distributed globally, as it has been isolated from patient blood cultures around the world including Hong Kong, South Korea, New Zealand, Canada, Sweden, France and Italy. Fewer than 15 cases of C. hongkongensis have been observed worldwide.
Pauljensenia hongkongensis is a Gram-positive, strictly anaerobic and non-spore-forming species of bacteria from the family Actinomycetaceae.
