Microorganisms and Disease
All infections do not cause fever and all fevers are not due to infections which of the following is an example of non-infections cause of fever?

Malaria
Typhoid
Rheumatic disease
Chicken pox

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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

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
None of these
it is a polysaccharide vaccine that does not confer long-term protection

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