Microorganisms and Disease
Fatalities following influenza infection are usually due to the

damage to the heart muscle
formation of granulomas in the lung
bacterial superinfection
dehydration

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

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

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Microorganisms and Disease
The "A" subunit of diphtheria toxin

lysis macrophages with the release of cytokines
binds host cell receptors found on heart cells
forms cAMP that leads to fluid accumulation
cause ADP ribosylation of a factor involved in protein synthesis

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Microorganisms and Disease
The influenza vaccine is administered each year because

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

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