Editor—Beardsall and colleagues are to be congratulated on presenting further evidence that group B streptococcus gives rise to a significant burden of disease in some areas of the United Kingdom.1 Retrospective data collected at St George's Hospital is in agreement with the authors' suggestion that culture proven sepsis under represents the true burden of disease. Firstly, we conducted a retrospective search for cases of culture positive group B streptococcus (either blood …