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Distribution of Shannon diversity and evenness indices for samples as a function of the presence of three acute otitis media pathogens identified by RT-PCR. Diversity indices for samples with no AOM pathogens (dark blue bar) were significantly higher than those for samples with 1 pathogen present (lighter blue), which were significantly higher than those for samples with 2 or 3 AOM pathogens (lightest blue) (Duncan multiple range test, P < 0.05).
