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

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

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Microorganisms and Disease
What is common in catheters and ventilators?

They are used primarily in neonatal intensive care units
They predispose patients to viral rather than bacterial infections
They bypass important defenses of the body
Bacteria responsible for associated infections are usually susceptible to antibiotics

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Microorganisms and Disease
The influenza vaccine is administered each year because

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

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