Microorganisms and Disease
The influenza vaccine is administered each year because

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

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

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

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Microorganisms and Disease
Plastic implants can pose a serious nosocomial infection problem because

phagocytes have trouble engulfing bacteria embedded in a biofilm
phagocytes have trouble moving on the plastic surface
All of these
infected implants usually have to be surgically removed

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Microorganisms and Disease
Which of the following is true regarding anthrax?

Anthrax is caused by a virus
Inhalation Anthrax requires infection with a large number of spores
Anthrax is highly contagious
Inhalation anthrax and cutaneous anthrax are caused by separate strains of Bacillus anthracis

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