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Given the following biochemical reactions, identify the organism: TSI = yellow / yellow Indole = neg Motility = pos Citrate = pos DNAse = neg MR / VP = neg / pos Moeller ornithine = purple Moeller lysine = yellow Moeller base = yellow PAD = neg

Given the following reactions, chose the best answer to identify the organism: Urea = Positive ONPG = Positive TSI = yellow/yellow Ornithine = Positive                MAC = clear colonies Indole = variable       MR = Positive             PAD = Negative                      DNase = Negative Motility = Negative               Nitrate = Positive                 Gram negative bacilli

Given the following reactions, identify the organism: MAC = pink colonies Indole = Negative Motility = Positive Citrate = Positive MR = Positive Ornithine = Negative Lysine = Negative TSI = Yellow/black ONPG = Positive PAD = Negative VP = Negative Sorbitol = Positive

Given the following reactions, chose the best answer to identify the organism.    MAC = Clear colonies Citrate = Positive                    Urea = hot pink VP = Negative             TSI = Red/Yellow                     PAD = Green after FeCl3 DNase = Negative                   Ornithine = negative               Motility = Positive Inositol = Positive                  Indole = Positive                     Adonitol = Positive

Match the organism with the MOST appropriate medium for optimal growth or identification. 

An enteric organism that produces an alkaline (purple) butt in lysine iron agar is:  1. Lysine decarboxylase positive  2. Lysine deaminase positive 3. Producing hydrogen sulfide 4. Glucose positive

The Enterobacteriaceae have the following common characteristics:

An outbreak of severe diarrhea occurred 12-72 hours after a holiday party where the gazpacho was linked to infection in almost everyone who attended. In stool cultures from the patients the pathogen grew medium to large clear colonies on MAC and XLD plates. Based on the additional biochemical reactions below, what is the most likely identification of the organism causing the outbreak? Citrate = negative Indole = negative Mannitol = positive Motility = negative Moeller Lysine = yellow Moeller Ornithine = yellow Moeller Base = yellow MR = positive ONPG = negative Oxidase = negative PAD = negative TSI = K/A Urea = negative

While transferring the stock cultures of Neisseria spp., you mixed them up and had to re-speciate them.  For each set of results, identify the genus and species (if possible).

Two quadrivalent vaccines for N. meningitidis in the U.S. contain antigens to which of the following serogroups?