Microorganisms and Disease
Which of the following characteristic of the Rotavirus was important for the construction of the Rotashield vaccine?

The ability of the Rotavirus to be transmitted faster
A limited number of capsule types
The possession of a segmented RNA genome
The ability of monkey Rotavirus strains to cause serious illness (diarrhea) in human beings

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Microorganisms and Disease
The influenza vaccine is administered each year because

mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines
it is a polysaccharide vaccine that does not confer long-term protection
the vaccine is sufficiently toxic to make it necessary to administer only a small amount at any one time
None of these

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Microorganisms and Disease
Which of the following is common in the disease caused by Coryne-bacterium diphtheriae and Bacillus anthracis?

The most serious disease symptoms are the direct result of toxin action
Both organisms are gram-positive spore formers
Diphtheria toxin and edema toxin are ADP ribosylating toxins
Both organisms cause skin and respiratory tract infections

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