Q J Med 1988; 68: 603-613
© 1988 Association of Physicians
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Streptococcus pyogenes Bacteraemia in Cambridge - A Review of 67 Episodes
Clinical Microbiology Laboratory, Addenbrooke's Hospital Hills Road, Cambridge CB2 2QW
Address correspondence to J. Francis, Clinical Microbiology Laboratory, Addenbrooke's Hospital, Hills Road, Cambridge CB2 2QW.
Accepted for publication 28 March 1988.
Sixty-seven episodes of bacteraemia due to Lancefield Group A streptococci occurred in patients admitted to or autopsied at Addenbrooke's Hospital, Cambridge from July 1974 to June 1986. Ninety-two per cent of infections were acquired in the community and 71 per cent of patients were adults. The overall mortality rate was 48 per cent and 15 per cent of cases died at home shortly after the onset of illness. Thirty-eight per cent of the patients had underlying disease and sixty-one per cent of these died compared with 40 per cent of those without underlying disease. Presentation in shock was the major predictor of mortality (79 versus 16 per cent) and was commoner in adults. Clinical features were variable and led to incorrect initial diagnosis in some cases. A localized site of infection was not recognized initially in 37 per cent of cases but the commonest evident site of entry was the skin. Annual incidence varied with age from 0.71 to 4.16/100 000 population and cases were commonest in the young and those over 50. The fulminating onset of community-acquired streptococcal infection in some adults emphasizes the importance of early treatment of suspected cases with penicillins.
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