Unit 4 Quiz (25) (page 2 of 41) | Moodle
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Question 2
Infectious dose is the quantity of a pathogen that is necessary to cause infection in a susceptible host. Order the
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answered following potential pathogens from most pathogenic to least pathogenic based on their \( \mathbf{I D}_{\mathbf{5 0}} \).
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E. coli 0157:H7 has an ID \( { }_{50} \) of less than 10 organisms.
Shigella has an \( \mathrm{ID}_{50} \) of 10 organisms
B. anthracis has an ID \( _{50} \) of 10,000 spores
Salmonella has an ID \( { }_{50} \) of more than 100,000 organisms
E. coli has an ID \( { }_{50} \) of \( 1,000,000 \) or more organisms
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\( \square \)
\#3
Most pathogenic (\#1)
\#2
\#4
Least pathogenic (\#5)
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