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All of the following are associated with Neisseria meningitidis EXCEPT:


A) no vaccines are available yet.
B) transmission by inhalation of respiratory droplets.
C) a polysaccharide capsule and fimbriae are important virulence factors.
D) close to 100% mortality in untreated patients.
E) the organism typically appears as a diplococcus.

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Infectious proteins called cause diseases such as scrapie and mad cow disease.

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Listeria monocytogenes virulence is directly related to its ability to


A) resist most antimicrobial agents.
B) live and reproduce inside its host's cells.
C) produce a powerful toxin.
D) produce a polysaccharide capsule.
E) form endospores.

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Tsetse flies transmit


A) new variant Creutzfeldt- Jakob disease.
B) St. Louis encephalitis.
C) Venezuelan equine encephalitis.
D) trachoma.
E) African sleeping sickness.

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The , a membrane lining areas of the eye such as the back side of the eyelids, is often infected by Haemophilus influenzae.

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