Which of the following organisms is termed “triple decarboxylase negative” and has been implicated in a nationwide outbreak of septicemia from contaminated IV fluid?
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What two bacteria produce swarming colonies on nonselective…
What two bacteria produce swarming colonies on nonselective media such as sheep blood agar?
Which of the following set of tests best differentiate Shige…
Which of the following set of tests best differentiate Shigella from E. coli?
This organism has been documented as causing nursery outbrea…
This organism has been documented as causing nursery outbreaks of neonatal meningitis and brain abscesses:
You have isolated a gram negative bacillus. What is the fir…
You have isolated a gram negative bacillus. What is the first biochemical test to perform in order to determine the identification tests to set up?
An unheated suspension of Salmonella Typhi typically produce…
An unheated suspension of Salmonella Typhi typically produces agglutination of Vi antisera. Heating the same suspension is necessary to determine which other antigen?
Escherichia coli strains are associated with all of the foll…
Escherichia coli strains are associated with all of the following properties except:
In the carrier state, where are pathogenic Salmonella organi…
In the carrier state, where are pathogenic Salmonella organisms carried?
The ONPG test allows organisms to be classified as a slow la…
The ONPG test allows organisms to be classified as a slow lactose fermenter by testing for which of the following?
Direct spread of pneumonic plague disease occurs by which ro…
Direct spread of pneumonic plague disease occurs by which route?