Exam 22: Rhizobium, Ochrobactrum, and Similar Organisms

Although validated susceptibility testing methods do not exist for this group of organisms, in vitro data suggest that certain cephalosporins and aminoglycosides are effective against which one of the following groups of organisms?

A patient with an indwelling catheter tip began spiking a fever of 39º C.The site of the catheter was inflamed and red.The catheter tip was cultured, and the following organism was isolated: a nonlactose-fermenter on MacConkey agar; a glucose, xylose, and mannitol oxidizer with the ability to hydrolyze esculin.This organism is most likely which one of the following?

The reservoir for Ochrobactrum anthropi is:

Which two organisms should be used to determine the validity of the nitrate reduction test?

Which of the following organisms has clear colonies on MacConkey agar, oxidizes glucose and xylose, and has the ability to hydrolyze esculin?

Which organism is a nonlactose-fermenter that oxidizes glucose and xylose and also morphologically resembles colonies of Enterobacteriaceae?

Which of the following organisms is oral and respiratory flora of animals and is transmitted by bites or scratches from dogs and cats?

The natural habitat of Achromobacter sp.can best be described as the:

The most common type of infection caused by both Rhizobium radiobacter and Ochrobactrum anthropi is:

Which nonlactose-fermenting organism that rarely causes human infection, grows poorly at 35º C; however, grows optimally between 20º and 25º C?