Answer the next three questions (A, B, C) concerning Enterobacteriaceae: Question A:   List one organism in the Enterobacteriaceae family that can only be classified as a definitive pathogen.

You have a set of plates from a urine culture, one SBAP and one MacConkey, both have greater than 100,000 colonies.  A gram stain indicates the presence of gram-negative bacilli.  You suspect it could either be from the Enterobacteriaceae family or is a Non-fermenter.  Outline two ways you could determine which group the organism is from and how that determination was made.

Which body site)s) might contain anaerobes as normal flora? Check all which apply.

Case Study 3: A 3-year old girl presents at the emergency room with bloody diarrhea, fever and vomiting. The child’s mother reports that the day-care center called yesterday morning because she started having a watery diffuse diarrhea.  That night she began to complain of severe cramps and her diarrhea became bloody and pus-filled.  The family has no recent travel history and while they are vegetarians, they only consume pasteurized milk, cheese, and egg products.  The gram stain showed many white blood cells and many gram-negative bacilli.  The culture resulted in many yellowish-clear colonies on the MacConkey’s agar that were oxidase negative and fermented glucose.   She was admitted to the hospital to treat her dehydration and for observation.  Case Study 3 Question 1: What was the most likely etiologic agent of infection in this patient? 

The most serious Hemophilus influenzae infections are usually caused by which of the following capsular serological types?

Which of the following characteristics may not be present a vaginal specimen from a typical case of bacterial vaginosis?

Match each of the following to the most likely method of transmission:

Campylobacter jejuni is described as:

The lesion associated with Yersinia pestis infection is called:

Which of the following statements regarding Bordetella pertussis is correct?