Neisseria

- Colonial morphology

- Microscopic appearance

- serogrouping of Neisseria

- Biochemical tests of Neisseria

Neisseria

Neisseria

- Pyogenic meningitis

- Meningococcal septicaemia

- Chronic meningococcal arthritis

Neisseria meningitidis

- Cerebrospinal fluid

Neisseria meningitidis

- Blood for culture

- Swabs from haemorrhagic skin lesions

Neisseria meningitidis

non-motile Gram negative diplococcus (with joining sides flattened)

Neisseria meningitidis

In smears from specimens, meningococci are found inside pus cells (intracellular)

Neisseria meningitidis

In smears from specimens, meningococci are found inside pus cells (intracellular)

Neisseria meningitidis

Chocolate agar:- transparent or grey, shiny, 1-2 mm colonies after incubation in CO2

Neisseria meningitidisOxidase Test

Neisseria meningitidisCarbohydrate Utilization

- Gonorrhoeae

-Acute conjunctivitis (Ophthalmia Neonatorum)

- Vulvovaginitis

Neisseria gonorrhoeae

- Gonococcal arthritis

- Urethral and cervical exudate

Neisseria gonorrhoeae

- Urine

- Eye Swab

- Rectal Swab

Neisseria gonorrhoeae

non-motile, non-capsulate Gram negative diplococcus

(with joining sides flattened)

Neisseria gonorrhoeae

In smears from specimens, gonococci are found inside pus cells (intracellular)

Neisseria gonorrhoeae

Chocolate agar:- colourless, raised, 1-2 mm in diameter colonies

Neisseria gonorrhoeae

MNYC agar:- small, raised, translucent colonies

Neisseria gonorrhoeae

Thayer-Martin agar:- small, raised, grey colonies

Neisseria gonorrhoeaeOxidase Test

Neisseria gonorrhoeaeCarbohydrate Utilization