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Water samples of the river Narmada from the source to the mouth were analyzed for the presence of shigellae and the Shigella isolates from 180 water samples were characterized by biotyping, serotyping and molecular typing. Out of all the 40 isolates, 23 were identified as S. flexneri, 10 as S. sonnei and 7 as S. dysenteriae. Serotyping was found to be the better identification method than biotyping...
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