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A 25 year old woman has a 4 year old son who is now recovering from Group A strep pharyngitis. Out of curiosity, the pediatrician does a throat culture on the mother which is positive for Group A strep even though she doesnt have a sore throat. The pediatrician also does an ASO titer and anti DNAse B assay on her both of which are negative. At this point we would say that she?

* A. Has asymptomatic infection
* B. Has opportunistic infection
* C. Is a carrier
* D. Is immunosuppressed

Correct Answer: C

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A person who has a normal healthy immune system acquires a new strain of E. coli that now lives in his gastrointestinal tract. This individual is not ill. A second person with an acute leukemia and no white blood cells acquires the same organism, develops diarrhea followed by hypotension, bacteremia, sepsis, and death. This organism is?	Characteristics of a bacterial capsule include?