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16S rRNA RefSeq: V15.22    Genomic RefSeq: V9.15
Genus: Haemophilus
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No Notes
percent abundance
SubPSupPKGBMHPSVTHPTTDST
Avg0.5810.8526.5853.5062.2342.3132.3251.9172.4250.008
Stdev0.8931.4095.8314.1042.0432.7927.1932.2662.9150.031
No Notes
percent abundance
SubPSupPKGBMHPSVTHPTTDST
Avg1.1212.1616.4363.3962.1262.7592.6411.9282.6060.011
10thp0.0000.0100.9050.3620.2480.1630.0270.0480.0220.000
90thp2.7393.99316.6408.1264.6318.6494.9194.1457.7450.050
Stdev2.1955.7606.5404.4373.0704.0379.3013.1364.5600.032
Prev81.81889.610100.00097.403100.00096.10494.80594.80593.50618.182
No Notes
percent abundance
SubPSupPKGBMHPSVTHPTTDST
Avg3.3755.32820.98712.3688.7239.9545.8067.9649.5210.055
10thp0.1850.3796.2953.2892.4453.3980.6860.9121.3020.000
90thp6.77314.36335.77723.47815.86318.73512.61315.90620.7270.154
Stdev4.5145.82411.6258.6775.9036.4765.2526.7997.2250.201
Prev97.29799.324100.000100.000100.000100.000100.000100.000100.00030.070
From: Dewhirst 35x9 data (not published yet)
No Notes
percent abundance
SubPSupPKGBMHPSVTHPTTDNS
Avg1.6512.21613.6019.3116.1344.5313.5793.4565.7380.014
10thp0.0180.0370.9691.6591.1400.2090.1950.1840.2490.000
90thp3.0277.28335.00419.80312.41710.7549.7189.33915.8440.044
Stdev4.1053.66714.5759.2935.0704.2964.9314.2847.0390.036
Prev100.000100.000100.000100.000100.00097.222100.000100.000100.00020.000
Overview: Bacteria of the genus Haemophilus are abundant in the mouth, making up several percent of the bacteria at most oral sites (Segata et al. 2012, Eren et al. 2014). Members of the genera Haemophilus and Aggregatibacter are closely related and not always cleanly distinguished using short fragments of the 16S ribosomal RNA gene.

Ecological role/importance in health and disease: Of the twelve species recognized in HOMD, one, H. parainfluenzae, is by far the most abundant at most sites within the mouth. Several others, including H. haemolyticus and an unnamed H. sp. HMT 036, are primarily detected on the keratinized gingiva. The opportunistic pathogen H. influenzae is detected with low prevalence in healthy individuals. Other pathogens such as H. aegyptius and H. ducreyi are included in HOMD as reference strains although they are not generally detected in the healthy oral microbiome. The taxon "Terrahaemophilus aromaticivorans", formerly included in HOMD, is now considered a synonym for H. parainfluenzae.