Weeksella virosa
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General information
Taxonomy
Family: Weeksellaceae
Natural habitat
In the environment, does not belong to the normal flora of the human being.
Clinical significance
Is mainly found in urine and vagina.
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Gram stain
Gram negative rods,
0.6 by 2-3 µm
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Culture characteristics
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Obligate Aerobic
BA: colonies are mucoid and adherent to the agar and develop tan to brown pigmentation, after 2-3 days
McConkey: no growth
BBAØ: no growth
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Characteristics
- Gram-negative
- bacilli
- growth obligate-aerobic
- no growth on MacConkey agar
- catalase-positive
- oxidase-positive
- urease-negative
- TSI no production of H2S
- nonmotile
- vancomycin-resistant
- colistine-susceptible
- indole-positive (Ehrlichs reagent)
- indole-negative (Kovacs reagent)
- penicillin-susceptible
- Polymixin B susceptible
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References
James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition
Karen C. Carrol et al (2019) Manual of Clinical Microbiology, 12th Edition
Microbiology on the go. An initiative by
Dept. Medical Microbiology and Infectious diseases