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. 2010 Oct 15;7(10):3657–3703. doi: 10.3390/ijerph7103657

Table 6.

Total viable count in feces of healthy humans (children, adults and elderly)^a.

Microbial group	Log₁₀CFU/g feces
Bacteroides	11.3^*
Eubacterium	10.7^*
Bifidobacterium	10.2^*
Ruminococcus	10.2^*
Peptostreptococcus	10.1^*
Peptococcus	10.0^*
Clostridium	9.8^*
Lactobacillus	9.6^*
Propionobacterium	9.4^*
Actinomyces	9.2^*
Methanobrevibacter	8.8^*
Desulphovibrio	8.4^*
Fusobacterium	8.4^*
Enterococci	3.5–7.2^**
Enterobacteriaceae	5.9–8.0^**
Escherichia coli	7.5–7.7^**
Citrobacter	3.3^**
Klebsiella	2.4^**
Yeasts	1.0–2.5^**

^a

Adapted from [61–63]** and [64]*.

^*

Values expressed as dry weight.

^**

Values expressed as wet weight.