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Topic: Organism Identification | 2016-07-14 | |
Difficulty: Moderate |
Author: | Chris Doern |
Question Type: Single Best Answer Please select the single BEST answer choice. |
A four day old neonate born to a 17 year old mother (G1P1) with an unknown history of sexually transmitted diseases develops bilateral conjunctivitis. Gonorrhea and Chlamydia cultures are collected and sent to the microbiology laboratory. Chlamydia cultures are negative but bacterial cultures for Neisseria gonnorhoaea yield an organism that grows on Thayer Martin, sheep blood and chocolate agar as a wet, gray organism that is oxidase positive. Gram stain showed Gram-negative diplococci. Unfortunately, on this day, your MALDI-TOF MS is out of commission and you are forced to identify the organism the old fashioned way. You set up carbohydrate utilization assays for glucose, maltose, sucrose, and lactose. The organism in question produces acid (positive result) from glucose and maltose, but not sucrose or lactose.
What is the cause of this patient’s infection?
What is the cause of this patient’s infection?