A Gram negative bacillus was recovered from the urine of a patient in a nursing home with a history of recurrent urinary tract infections.  The organism was oxidase negative, lactose negative, indole negative, urease positive, and motile.  The most likely identification of this agent would be:

How does Enteroinvasive E. coli infection differ from EPEC and ETEC?

Of the following reactions, which is typical for Escherichia coli?

In the nitrate reduction test, a red color which develops only after the addition of zinc dust indicates:

What organism is an opportunistic pathogen striking the immunocompromised patient in Florida and produces a violet pigment on nonselective agar?

Of the following organisms, which would result in a TSI result of A/A with no H2S production?

In the test for urease production, ammonia reacts to form which product?

This organism has been documented as causing nursery outbreaks of neonatal meningitis and brain abscesses:

Which of the following is observed in Salmonella infections and not in Shigella infections?

Which single test separates K. oxytoca from K .pneumoniae?