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Skirrow’s and Butzler’s media select for:

An isolate from a wound culture produced the following results:                TSI:  K/A H2S+                    Motile +          Indole-            Citrate+           PAD-                MAC:  clear colonies            Urease-            VP-                 LDC-               ODC- Use the following choices to Answer the questions

An enteric with a red colony on SBA or nutrient agar is most likely:

Edwardsiella tarda can be distinguished from E. coli when E. tarda is:

Observe the following Salmonella serotyping results and determine the most likely species.                                                           Antisera   Before boiling:    Polyvalent        Vi              Group D                        –                   +                  –   After boiling:       Polyvalent        Vi              Group D                                              +                  —                  +  

QUESTIONS 53-55 REFER TO THE FOLLOWING INFORMATION:An isolate from a stool culture produced the following results: MacConkey: Colorless Citrate: Positive TSI: K/A H2S+ Hektoen: Blue/ Black centers Lysine: Positive Indole – What is the most likely pathogen?

Most members of Enterobacteriaceae are:

What is the expected appearance of E. coli O157:H7 colonies on the screening media used specifically to recover it?

A stool specimen contained an enteric that produced green colonies on HE. Upon typing the organism, the tech noted that no reactions occurred when the organism was mixed with Shigella antisera Groups A-D. What is the best action?

Which battery of media would be best for urine or wound cultures when a Proteus mirabilis is suspected?