Microbiology: An Introduction (13th Edition)
Microbiology: An Introduction (13th Edition)
13th Edition
ISBN: 9780134605180
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case, Derek Weber, Warner Bair
Publisher: PEARSON
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Chapter 15, Problem 5MCQ

The ID50 for Campylobacter sp. is 500 cells; the ID50 for Cryptosporidium sp. is 100 cells. Which of the following statements is false?

  1. a. Both microbes are pathogens.
  2. b. Both microbes produce infections in 50% of the inoculated hosts.
  3. c. Cryptosporidium is more virulent than Campylobacter.
  4. d. Campylobacter and Cryptosporidium are equally virulent; they cause infections in the same number of test animals.
  5. e. Cryptosporidium infections are more severe than Campylobacter infections.
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