2. Why are the tests used in the bacterial examination of water designed to test for E. coli rather than the more serious pathogens like Hepatitis virus or Giardia? 3. Why is lactose containing broth and agar used to detect the presence of coliforms?
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coli rather than more serious pathogens like Hepatitis virus or Giardia because E. coli is a common indicator of fecal contamination. It is typically harmless and exists in the intestines of warm-blooded animals, including humans. The presence of E. coli in Show more…
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