Host Factors and Capsular Typing of Body Fluid Isolates in Fulminant Pneumococcal Infections

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Abstract
A 10-year retrospective study was made to determine the spectrum of underlying disease in, and the capsular types of pneumococci isolated from, blood and body fluids of 140 hospitalized patients. Fifteen serotypes were found among 82 typed isolates, 53% of which were types 8, 14, or 23. There was a predominance of males and a high incidence of underlying pneumonia, chronic liver disease, nephrotic syndrome, cerebrospinal fluid rhinorrhea, and malignancy. Mortality rates were higher among the very young and aged, and the immunologically comprised host at either extreme of life was more susceptible to disseminated pneumococcal infection. Pneumococci of the higher capsular types were prominent in children, and those of the lower types in adults, a finding in agreement with other recent studies.

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