Micro/Virology Flashcards

1
Q

What are the two most common modes of acquiring a C.diff infection that produces a dangerous level of toxins?

A

Antibiotic use and fecal oral transmission

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2
Q

Enterotoxin B (which is an exotoxin) in C. diff has what actions; is it more or less destructive than A?

A

Actin depolymerization, cytoskeleton destruction and is essential to virulence and stronger than exotoxin A.

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3
Q

As a physician what some ways you can reduce C.diff spread?

A

Antibiotic stewardship, and wearing gloves

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4
Q

Is C.diff normal microbiotic flora in the gut?

A

Yes for some.

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5
Q

Which bacterial species can form endospores when in nutrient depleted environments?

A

Clostridium and Bacillus species. Gram +

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6
Q

Astrovirus; describe it

A

Icosahedral, naked, +ssRNA linear

Shaped like a star, fecal oral transmission,
mild gastroenteritis self limited

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