1. Neisseria

2. Neisseria Colonial morphology Microscopic appearance
serogrouping of Neisseria
- Biochemical tests of Neisseria

3. Neisseria

4. Neisseria meningitidis
- Pyogenic meningitis
- Meningococcal septicaemia
- Chronic meningococcal arthritis

5. Neisseria meningitidis
Cerebrospinal fluid
Blood for culture
Swabs from haemorrhagic skin lesions

6. Neisseria meningitidis
non-motile Gram negative diplococcus
(with joining sides flattened)

7. Neisseria meningitidis
In smears from specimens, meningococci are found inside pus cells (intracellular)

8. Neisseria meningitidis
In smears from specimens, meningococci are found inside pus cells (intracellular)

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

10. Neisseria meningitidis
Oxidase Test

11. Neisseria meningitidis
Carbohydrate Utilization

12. Neisseria gonorrhoeae
Acute conjunctivitis
(Ophthalmia Neonatorum)
- Vulvovaginitis
- Gonococcal arthritis

13. Neisseria gonorrhoeae
Urethral and cervical exudate
Urine
Eye Swab
Rectal Swab

14. Neisseria gonorrhoeae
non-motile, non-capsulate Gram negative diplococcus
(with joining sides flattened)

15. Neisseria gonorrhoeae
In smears from specimens, gonococci are found inside pus cells (intracellular)

16. Neisseria gonorrhoeae
Chocolate agar:- colourless, raised, 1-2 mm in diameter colonies

17. Neisseria gonorrhoeae
MNYC agar:- small, raised, translucent colonies

18. Neisseria gonorrhoeae
Thayer-Martin agar:- small, raised, grey colonies

19. Neisseria gonorrhoeae
Oxidase Test

20. Neisseria gonorrhoeae
Carbohydrate Utilization