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

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

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

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

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Microorganisms and Disease
The "A" subunit of diphtheria toxin

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

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Microorganisms and Disease
What is common in catheters and ventilators?

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

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