Cont. Systematic Bacteriology Overview

Cont. Systematic Bacteriology Overview

1. 14.Spirochaetes

   • Treponema pallidum
     • Treponema pallidum pallidum
       • Cause syphilis
     • Treponema pallidum pertenue
     • Treponema pallidum endemicum
     • Treponema pallidum carateum
   • Borrelia recurrentis
     • Cause release relapsing fever and lyme disease
   • Leptospira interrogans
     • Cause leptospirosis in animal

2. 15.Mycoplasma (Lack a cell wall)

   • Mycoplasma pneumoniae
     • Causes atypical pneumonia
   • Ureaplasma urealyticum
     • (Urease +)
   • Mycoplasma hominis
     • associated with postpartum fever and pelvic inflammatory disease
   • Mycoplasma genitalium
     • associated with non-gonococcal urethritis

3. 16.Legoinella

   • Legionella pneumophila
     • Causes outbreaks of atypical pneumonia called "Legionnaire's disease" and mild flulike condition without pneumonia called "Ponatic fever" which is self limited

4. 17.Rickettsia & Orientia

   • Orientia is only one species :
     • Orientia tsutsugamushi
   • Both are short bacilli that are difficult to stain by gram but stained by Giemsa stain
   • They are obligate intracellular parasites
   • Rickettsia
     • Rickettsia typhi
     • Rickettsia rickettsii
     • Rickettsia akari
     • Rickettsia conorii
     • Rickettsia prowazekii

5. 18.Coxiella & Q Fever

   • Coxiella burnetii
     • The only species and causes Q fever
     • It is similar to rickettsia in most characters
     • It is differs from rickettsia in being more resistant to drying, disinfectants and UV

6. 19.Chlamydiae

   • chlamydia trachomatis
   • Chlamydia (Chlamydophila) psittaci
   • Chlamydia (Chlamydophila) pneumoniae

7. 20.Actinomycetes

   • Actinomyces israelii
     • Gram-positive filamentous branching bacilli
     • Cause Actinomycosis (abscess with draining sinus tracts), The lesion (Mycetoma)
     • Grows slowly
     • Aerobic
   • Nocardia astroides
     • Gram positive filamentous, branching rods
     • Cause nocardiosis (especially lung and brain abscesses)
     • Acid-fast (weakly) Appears red
     • Aerobic