The most likely identification of a pigment-producing, anaer…
The most likely identification of a pigment-producing, anaerobic, gram-negative rod recovered from an abdominal wound that was susceptible to most antibiotics, inhibited by bile (bile susceptible) and moderately saccharolytic, is:
Read DetailsYou received a wound culture that yielded the organisms show…
You received a wound culture that yielded the organisms shown below. The culture produced oxidase-positive, beta-hemolytic colonies on BAP. The organisms were resistant to O129. The sample came from a 75 year old man who developed fever and chills. He is a known alcoholic and has been diagnosed of liver cirrhosis. Based on these findings, this organism is most likely:
Read DetailsA gram negative bacillus was isolated from a burn infection….
A gram negative bacillus was isolated from a burn infection. The wound had a greenish coloring and a fruity smell. The organism was motile, oxidase positive, and K/K on TSI agar. In OF media, the organism turned yellow in the open tube but was green in the closed tube. Based on this information, what is the likely causative agent?
Read DetailsWhich of the following morphologically resembles Streptococc…
Which of the following morphologically resembles Streptococcus pyogenes colonies on BAP (beta hemolytic colonies) and causes pharyngitis in older children and young adults. The organism when Gram stained shows as slender, non-spore forming Gram positive rods.
Read DetailsAn organism is isolated from the endotracheal tube of a pati…
An organism is isolated from the endotracheal tube of a patient receiving chemotherapy. The gram-negative bacillus grows on BAP and produces clear, colorless colonies on MacConkey. The isolate is non-motile, oxidase-negative, and biochemically inactive. Which of the following is the most likely organism?
Read DetailsAnaerobic Gram negative rods are isolated from a decubitus u…
Anaerobic Gram negative rods are isolated from a decubitus ulcer (bed sore) of a 70 year old patient in a nursing home facility. Below are the results on Kanamycin/Vancomycin agar (left) and BBE agar (right). Based on the information and culture results, which organism would be the likely cause of infection? KV_BBE.jpg
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