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Clostridium tetani

Last updated about 2 years ago

14 questions

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Question 14

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Clostridium tetani causes

Measles

Botulism

Tetanus

Polio

C. tetani is a gram-positive, endospore producing bacillus

True

False

C. tetani uses which virulence factor?

Spike proteins

Surface receptors

Exoenzymes

Exotoxins

Which two exotoxins are used?

Tetanotoxin

Tetanospasmin

Tetanolysin

Hemolysin

Where are C. tetani endospores typically found?

Water

Soil

Plant hosts

What is the host range for C. tetani?

Animals only

Humans only

Humans and animals

The incubation period ranges from ___ to ___ days

7 to 10 days

3 to 21 days

2 to 14 days

Transmission occurs through

Environmental endospores enter host through an open wound

Drinking contaminated water

Direct contact with an infected host

Endospores are consumed by eating raw or undercooked meat

Which toxin damages local tissues to facilitate the spread of the bacteria?

Tetanospasmin

Tetanolysin

Which toxin is absorbed by the nervous system and causes involuntary contraction of the skeletal muscles?

Tetanospasmin

Tetanolysin

Common signs and symptoms of tetanus include

Painful muscle spasms

Nausea and vomiting 

Lockjaw

Muscle rigidity

Treatment of tetanus typically includes

Antiviral drugs

Antibiotics

Antitoxin vaccine

Wound cleaning

Tetanus is prevented by receiving scheduled toxoid vaccines called DTaP and TDaP

True

False

How often should adults receive a tetanus booster?

Every 5 years

Every year

Boosters are not necessary

Every 10 years