Enlist Types of Bacteria
1. Gram positive and Gram negative;cocci
Gram positive cocci
Spherical, circular shape
Blue colour
Staphylococcus aureus
Streptococcus pyogenes; sore throat; pharyngitis
Pneumococcus pneumoniae (streptococcus pneumonia)
Streptococci
1. Streptococcus pyogenes
2. Streptococcus agalactiae
3. Enterococci
4. Streptococcus Bovis
5. Viridans streptococci
Gran negative cocci
Pink or red colour
Spherical shape
1. Neisseria gonorrhoea
Causing gonorrhoea
2. Neisseria meningitis
Causing meningitis
Gram Positive and Gram Negative Bacilli
Rod shaped
Gram positive Bacilli
1. Corynebacteria
2. Mycobacteria
3. Bacillus; Bacillus Anthracis
4. Clostridia
1. Corynebacteria
a. Corynebacterium diphtheriae; cause diphtheria
b. Diphtheroids
2. Mycobacteria
1. Mycobacterium tuberculosis (TB)
2. Mycobacterium leprae
3. Non- tuberculosis mycobacterium
4. Clostridia
1. Clostridium tetani
2. Clostridium perfringens
3. Clostridium botulinum
4. Clostridium difficile
Gram Negative Bacilli
1. Vibrio
a. Vibrio cholera
b. Non- cholera vibrio
2. Escherichia
Escherichia coli (E. coli); normal flora of intestine.
3. Salmonella
Salmonella typhi; typhoid fever
4. Shingella
Dysentery
5. Klebsiella
Coliform bacilli causing UTI.
6. Proteus
Intestinal normal flora and opportunistic pathogen.
7. Compylobacter
Cause intestinal and extra intestinal disease.
8. Helicobacter
Helicobacter pylori
Cause ulceration of stomach.
9. Pseudomonas
Cause Nosocomial infection.
10. Klebsiella
1. Klebsiella pneumoniae
2. Klebsiella oxytoca
Gram Negative Coccobacilli
1. Bordetella
a. Bordetella pertussis
Cause whooping cough.
b. Hemophilus
Hemophilus influenza
Spirochaetes (gram negative bacilli with endoflagella)
1. Treponema palladium
Causing syphilis
2. Borrolia burgdorferi and Borrlia recurentis
(Causing lyme disease) (Causing relapsing fever)
3. Leptospira interrogans
Causing leptospirosis
Mycoplasma;Pleomorphic Bacteria
Ability to alter morphology, biological function.
1. Mycoplasma pneumonia
Gram negative Pleomorphic bacilli.
Typical pneumonia
2. Mycoplasma Hominis
After abortion/ fever termination of pregnancy.
3. Mycoplasma Urealyticum
Cause urethritis.
(Swelling and irritation of urethra, caused by sexually transmitted infection).
Rickettsia
Pleomorphic gram negative bacilli.
1. Rickettsia
Transmitted bite of Infection.
2. Ehrlichia
Transmitted by ticks.
3. Coxiella
1. Coxiella burneti
Enter insect respiratory tract inhalation.
2. Rochalimea quintana
Transmitted through feces of infected body louse.
6. Chlamydiae
Gram negative cocci
Oval shape
1. Chlamydiae trachomatis
Infection in genito urinary tract
2. Chlamydiae psittaci
Infection in lower respiratory tract
3. Chlamydiae pneumoniae
Respiratory tract infection
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