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. 2022 Mar 29;14(7):1423. doi: 10.3390/nu14071423

Table 2.

Summary of Bifidobacterium prevalence in infants aged 1 to 2 months. Except for information on breastfeeding initiation and duration in a cohort, values are based solely on infants who were breastfed. The breastfeeding initiation (ever breastfed) rate and breastfeeding duration were calculated using data from all infants in a cohort with an available sample and a known breastfeeding status.

Cohort Location Ever Breastfed (Median Duration) Historic Breastfeeding Pattern Any Bifidobacterium B. adolescentis B. animalis B. bifidum B. breve B. longum subsp. infantis B. longum subsp. longum B. longum subsp. Unknown B. pseudocatenulatum
Bangladesh 100% (>2 years) High 100% 5.8% 2.6% 32.5% 40.1% 83.6% 26.3% 1.1% 8.4%
Gambia 100% (Unknown) High 100% 0% 0% 0% 25% 91.7% 54.2% 12.5% 0%
Austria 91.8% (6.8 months) Medium 100% 23.7% 0.82% 6.6% 55.7% 4.1% 61.5% 4.9% 52.4%
Finland 99.3% (8 months) Medium 100% 15.5% 0% 8.8% 40.0% 0.74% 56.3% 3.7% 51.1%
Germany 91.1% (7.4 months) Medium 100% 18.1% 0.67% 7.4% 61.1% 4.0% 61.7% 4.0% 57.0%
Switzerland 97.3% (8 months) Medium 100% 4.8% 0% 11.1% 58.7% 14.8% 41.8% 6.3% 49.7%
Davis, CA, USA 100% (9.3 months) Low 65% 8.3% 0% 13.3% 36.7% 8.3% 36.7% 1.7% 15%
Cincinnati, OH, USA 86.5% (3.1 months) Low 97% 11.5% 0% 19.2% 61.5% 0% 69.2% 0% 19.2%