Atypical Bacteria Flashcards
No cell wall
Walking pneumonia
Mycoplasma
Abscess Acid fast Aerobe Filamentous Slow growing
Nocardia
Anaerobe Draining sinus tracts Filamentous Mycetoma Sulfur granules
Actinomyces
Abscess
Foul-smelling
Mixed infection
Bacteroides fragilis
Painless ulcer (chancre) Palm and sole rash Spirochete STD Strict anaerobe Syphilis Unculturable
Treponema pallidum
Deer tick
Erythema chronicum migrans
Lyme disease
Borrelia burgdorferi
Antibiotic for Lyme patient < 8 years old
Ampicillin
Acid fast Granuloma Isoniazid Lowenstein-Jensen medium PPD
Mycobacterium tuberculosis
Anesthetic skin lesion
Leprosy
Nerve damage
Mycobacterium leprae
Elementary bodies Iodine stain Reticulate bodies Trachoma STD
Chlamydia trachomatis
Birds
Parrots
Chlamydia psittaci
Obligate intracellular growth
Southeastern Atlantic and south central states
Tick
Weil-Felix reaction
Rickettsia
Cat-scratch fever
Bartonella
Undulant fever
Brucella
Q fever
Coxiella burnetii
Tularemia
Francisella tularensis
Meningitis, sepsis (zoonotic)
Listeria monocytogenes
Rocky Mountain spotted fever, typhus
Rickettsia
Goats and sheep
Intracellular growth
Undulant fever
Unpasteurized milk and cheese
Brucella
Intracellular
Rabbit
Tularemia
Ulcer
Francisella tularensis
Baby Cold enrichment Intracellular growth Meningitis Milk products Motility Undercooked meat
Listeria monocytogenes
What are the hallmarks of Legionella infection?
Non-productive cough
Negative sputum Gram stain
Extrapulmonary signs (confusion, headache, and GI symptoms)
What is an important risk factor for Legionella infection?
Immunocompromised
What is one way to make a definitive diagnosis of Legionella infection?
Detection of antigens in urine
What is the major virulence factor of Legionella?
Intracellular growth
How would you confirm a Rocky Mountain Spotted Fever diagnosis?
Indirect immunofluorescence or latex agglutination procedures with a single diagnostic titer of 1:64
What lab procedure would give a definitive diagnosis of syphilis?
Specific antibody test
Why does Chlamydia not gram stain?
Its cell wall does NOT contain muramic acid
What is the pathogenesis of Chlamydia?
Elementary body = extracellular
- *non-replicating and NOT metabolically active
- *infectious
Reticulate body = intracellular
- *replicating and metabolically active
- *non-infectious
What is the most common bacterial opportunistic infection in adult HIV patients?
Mycobacterium avium
How is Bartonella quintana transmitted?
By body louse
How is Bartonella henselae transmitted?
By fleas
How is Bartonella bacilliformis transmitted?
By sand flies
