BACTERIA

1. Gram Positive Cocci :
     - Staphylococci
     - Streptococci

2. Gram Negative Diplococci :
     - Moraxella Catarrhalis
     - Neisseria

3. Non-spore Forming Gram Positive Bacilli :
     - Corynebacteria
     - Listeria

4. Enteric Gram Negative Rods (Enterobacteriaceae) :
     - Salmonella
     - Shigella
     - Escherichia Coli
     - Klebsiella
     - Proteus

5. Pseudomonas

6. Vibrio

7. Campylobacter

8. Parvobacteriaceae :
     - Haemophilus
     - Bordetella
     - Brucella
     - Yersinia
     - Pasteurella
     - Francisella

9. Spore Forming Gram Positive Bacilli :
     - Aerobic Spore-bearers: Genus Bacillus
     - Anaerobic Spore-bearers: Genus Clostridium

10. Anaerobic Gram Negative Non Sporing Bacilli :
     - Bacteroides

11. Mycobacteria :
     - Mycobacterium tuberculosis
     - Mycobacterium leprae
     - Atypical Mycobacteria

12. Spirochetes :
     - Treponema
     - Borrelia
     - Leptospirae

13. Richettsiae

14. Mycoplasma

15. Chlamydia