Occurrence and Clinical Presentation of Systemic Pneumococcal Infections in an Unselected Population in Oslo, Norway, Between 1993 and 1997

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Abstract
In order to describe the clinical and microbiological manifestations of systemic pneumococcal infection in an unselected urban population, 147 cases that occurred in the period 1993–1997 were retrospectively reviewed. An unexpected finding was that gastrointestinal symptoms were remarkably common. All pneumococcal isolates were fully susceptible to penicillin. The 7-valent conjugated vaccine covered 71% of those under 2 years of age, but only 21% of those 15–65 years of age were covered. Although the case fatality rate was 17%, the rate of early fatality due to systemic pneumococcal infection was unchanged compared with data published in the era before antibiotics. This study emphasizes the importance of continuing efforts to prevent systemic pneumococcal infections.

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