OTHER BACTERIA

LISTERIA MONOCYTOGENES ERYSIPELOTHRIX RHUSIOPATHIAE ALCALIGENES FAECALIS CHROMOBACTERIUM VIOLACEUM FLAVOBACTERIUM MENINGOSEPTICUM GARDENERALLA VAGINALIS DONOVANIA GRANULOMATIS ACINETOBACTER STREPTOBACILLUS MONILIFORMIS SPIRILLUM MINUS LEGIONELLA PNUEMOPHILIA

Listeria monocytogenes

Gram + bacilli Tumbling motility at 25C,nonmotile at 37C Saprophyte on soil ,water, sewage. Meningitis in neonates,elderly Abcess, conjunctivitis,pharyngitis,urithritis Anton Test -instillation into eyes of rabbits-

Keratoconjunctivitis Isolation-vaginal secr.,lochia,meconium,cord

blood,csf,blood.

Cold enrichment -materials stored in tryptose phosphate/thioglycolate broth at 4C,and subculture are done at weekly intervals forn 1-6 months

Isolates may be missed as diphtheroids Treatment

1. Ampicillin

2. Cotremoxazole

3. Gentamycin

Erysipelothrix rhusiopathiae

Gram + bacilli-nonmotile Cause swine erysipelas,human eryseipeloid Human infections in hands or fingers of

persons handling animals,fish Lesions are edematous,painful erythema Treatment

1. Penicillin

2. Erythromycin

Alcaligenes faecalis

Gram –ve bacilli—motile Saprophyte Cause

1. Typhoid like fever

2. UTI

3. Infentile gastro enteritis

Chromobacterium violaceum

Gram –ve bacilli-motile

Violet coloured pigment Skin lesions with pyemia and multiple abcess

Flavobacterium meningosepticum Gram-ve bacilli---nonmotile

Yellow pigment Meningitis in newborns

Gardenerella vaginalis Gram-ve bacilli- nonmotile Causes Bacterial vaginosis charecterised

by-1. Raised vaginal PH(>4.5)2. Foul smelling discharge3. Clue cells BV also by Mobilincus and bacteroids Clue cells –vaginal epithelial cells studded

with numerous bacteria Treatment Metronidazole

Donovania granulomatis Gram –ve bacilli---nonmotile Bipolar condensation of chromatin-closed safty

pin appearance Causes Donovanosis-painful papule on the

genitalia Treatment

1. Tetracyclin

2. Cotrimoxazole

3. Chloramphenicol

4. Gentamycin

Acinetobacter

Gram –ve bacilli ---nonmotile A.baumanni-pink colour on MA A.Lowffi-yellow colour on MA Iatrogenic meningitis

Rat bite Fever

Caused by streptobacillus moniliformis(gram-ve nonmotile) and spirillnum minus(g-ve bacillus –motile)

Rat bite may have healed-but it suppurates with fever and regional lymphadenopathy

Both types responds to

1. Penicilline

2. Tetracycline

Legionella pneumophilia

Gram –ve bacilli –motile Stains better with silver impregnation method Best visualised by direct immunofluroscent

antibody stain with monoclonal /polyclonal sera

Human infection –inhalation of aerosoles produced by cooling towers-AC,cause legionellosis

1. Legionnaire’s d/sfever ,nonproductive cough,dyspnoea,leading to pneumonia

2. Pontaic fever –nonfatal influenza like d/s.

Treatment

1. Macrolides

2. Ciprofloxacin

3. Tetracycline

Nonsporing anerobes

Classification

1. Cocci

2. Bacilli

3. Spirochetes