Introduction: The ability of Streptococcus thermophilus to convert lactose into lactic acid has long been utilised by the dairy industry. A seemingly low-pathogenicity organism, there have been no previously published reports linking the consumption of foodstuffs to bacteraemia with this bacterium.
Case Presentation: Here we present a case of a regular consumer of Activia yoghurt who developed S. thermophilus bacteraemia probably due to transient bowel ischaemia secondary to polycythaemia.
Conclusion: The isolation of this bacterium from blood cultures may indicate underlying large bowel pathology and should not necessarily be dismissed as contamination.
Stephens, J., & Turner, D. P. (in press). Streptococcus thermophilus bacteraemia in a patient with transient bowel ischaemia secondary to polycythaemia. JMM Case Reports, https://doi.org/10.1099/jmmcr.0.000060