Neisseria

Question 1

Morphology Neisseria

Answer 1

Gram -
Non motile
Non spore foriming
Polysach capsule
(for Gonorrhoeae extra adhesion pili on it's surface)

Question 2

Cultivation Neisseria Meningitidis

Answer 2

Chocolate Agar

symmetrical translucent shiny colonies

Question 3

Biochemical activity Neisseria Gonorrhoeae

Answer 3

Oxidase +
dextrose
Maltose

Question 4

Pathogeny Neisseria Gonorrhoeae

Answer 4

facultative intracellular parasite, obligate human pathogen

Question 5

Virulence factors Neisseria Gonorrhoeae

Answer 5

Polysach capsule

IgA-protease

Question 6

Diseases caused by droplet infection Neisseria Meningitidis

Answer 6

Purulent Meningitis
Septicemia
fulminant Meningococcal Septiceaemia (Shock, DIC, petechia, purpura)
Waterhouse-Friderichsen syndrome ( Adrenal insufficiency, + Fulminant meningococcal septicaemia symptoms)
Increase capillary permeability causes hypovolemia.

Question 7

Diagnosis Neisseria Meningitidis

Answer 7

CSF, blood culture
Latex agg
Smear