A middle-aged women presented to the emergency room complaining of cramping and gastrointestinal discomfort. She had recently attended a family reunion the past weekend. The event was a picnic where potato salad, hamburgers, deviled eggs, hot dogs and chips were served. A feces culture was requested resulting in no growth. What would be the next recommended follow-up testing?
a. Serologic testing for IgM and IgG
b. No follow-up testing required
c. Collect an additional specimen and at-tempt to cultivate on specialized media
d. Treat the patient with ampicillin
D
A follow-up specimen is highly likely to not result in the isolation of a potential pathogen without an increase or change in symptoms at this time. The patient's condition may resolve inde-pendently if the isolate is a pathogen such as Staphylococcus aureus that may have been trans-mitted in the potato salad or deviled eggs. The other potential sources of infection include the hamburger, Escherichia coli or the hot dogs for L. monocytogenes. E. coli is not indicated unless there is evidence of undercooked hamburger.
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