Neisseria: Difference between revisions

Latest revision as of 14:41, 8 August 2024

Genus of Gram-negative diplococci within the family Neisseriaceae
Non-motile, non-spore-forming, oxidase-positive and mostly catalase-positive
They are commensal flora of the mucosal membranes of humans and some animals, and are generally considered non-pathogenic except Neisseria meningitidis and Neisseria gonorrhoeae
Species include:
- Neisseria meningitidis
- Neisseria gonorrhoeae
- Neisseria lactamica has resports of bacteremia and pneumonia in immucompromised patients
- Neisseria cinerea has been isolated from cervix, rectum, conjunctivae, blood, and CSF, and rare cases of peritonitis, tonsillitis, lymphadenitis, proctitis, and pulmonary cavitations
- Neisseria flavescens and Neisseria polysaccharea are in the flora of human respiratory tract and re non-pathogenic
- Nesseria subflava, Neisseria flava, Neisseria perflava, Neisseria mucosa, and Neisseria sicca are in the flora of human respiratory tract and can rarely cause endocarditis, bacteremia, meningitis, pneumonia, empyema, pericarditis, peritonitis, septic arthritis, and liver abscess
- Neisseria elongata and Neisseria weaveri, in contrast to the other species, are bacilli in pairs or chains, and are catalase-negative
  - Neisseria elongata is found in the human respiratory tract, and can rarely cause endocarditis, bacteremia, ad osteomyelitis
  - Neisseria weaveri is found in the canine respiratory tract, and can rarely cause pneumonia

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+* Genus of [[Stain::Gram-negative]] [[Shape::diplococcus|diplococci]] within the family [[Family::Neisseriaceae]]
-* Includes:
+* Non-motile, non-spore-forming, oxidase-[[Oxidase::positive]] and mostly catalase-[[Catalase::positive]]
-** [[Neisseria meningitidis]]
+* They are commensal flora of the mucosal membranes of humans and some animals, and are generally considered non-pathogenic except [[Neisseria meningitidis]] and [[Neisseria gonorrhoeae]]
-** [[Neisseria gonorrhoeae]]
+* Species include:
+** [[Neisseria meningitidis|'''Neisseria meningitidis''']]
+** [[Neisseria gonorrhoeae|'''Neisseria gonorrhoeae''']]
+** [[Neisseria lactamica]] has resports of bacteremia and pneumonia in immucompromised patients
+** [[Neisseria cinerea]] has been isolated from cervix, rectum, conjunctivae, blood, and CSF, and rare cases of peritonitis, tonsillitis, lymphadenitis, proctitis, and pulmonary cavitations
+** [[Neisseria flavescens]] and [[Neisseria polysaccharea]] are in the flora of human respiratory tract and re non-pathogenic
+** [[Nesseria subflava]], [[Neisseria flava]], [[Neisseria perflava]], [[Neisseria mucosa]], and [[Neisseria sicca]] are in the flora of human respiratory tract and can rarely cause endocarditis, bacteremia, meningitis, pneumonia, empyema, pericarditis, peritonitis, septic arthritis, and liver abscess
+** [[Neisseria elongata]] and [[Neisseria weaveri]], in contrast to the other species, are bacilli in pairs or chains, and are catalase-negative
+*** [[Neisseria elongata]] is found in the human respiratory tract, and can rarely cause endocarditis, bacteremia, ad osteomyelitis
+*** [[Neisseria weaveri]] is found in the canine respiratory tract, and can rarely cause pneumonia
 {{DISPLAYTITLE:''Neisseria''}}