Microbiology: An Introduction
Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Chapter 27, Problem 5MCQ

The water used to prepare intravenous solutions in a hospital contained endotoxins. Infection control personnel performed plate counts to find the source of the bacteria. Their results:

  Bacteria/100 ml
Municipal water pipes 0
Boiler 0
Hot water line 300

All of the following conclusions about the bacteria can be drawn except which one?

  1. a. They were present as a biofilm in the pipes.
  2. b. They are gram-negative.
  3. c. They come from fecal contamination.
  4. d. They come from the city water supply.
  5. e. none of the above
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