In doubtful cases, the presence of which organism confirms the fecal contamination of water-
Correct Answer: Clostridium perfringes
Description: Park's textbook of preventive and social medicine 23rd edition. the presence of spores of Cl. perfringens in a natural water suggest that fecal contamination has occurred and their presence in the absence of coliform group suggest fecal contamination occurred at some remote time.
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Social & Preventive Medicine
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