TABLE 1.
Characteristics of the bacterium isolated from the patient's bloodstream
| Test | Result |
|---|---|
| Anaerobic culture | Negative |
| Aerobic culture | Positive |
| Gram staining | Gram-negative rods |
| Cultivation on: | |
| Blood agar | Shiny colonies and dry colonies |
| MacConkey agar | No growth |
| Chocolate agar | Shiny, mucoid colonies |
| Oxidase test | Positive |
| Indole test | Negative |
| Catalase test | Positive |
| Vitek 2a | Moraxella group, 99% confidence |
| API 20NEb | M. lacunata, 85% confidence |
a
Vitek 2 (bioMerieux Inc., Durham, NC) is an automated system for bacterial identification and antibiotic susceptibility testing.
b
API test kits (bioMerieux Inc., Hazelwood, MO) are used for identification of bacteria and yeast.