Journal Article

Impact of Penicillin Susceptibility on Medical Outcomes for Adult Patients with Bacteremic Pneumococcal Pneumonia

Joshua P. Metlay, Jo Hofmann, Martin S. Cetron, Michael J. Fine, Monica M. Farley, Cynthia Whitney and Robert F. Breiman

in Clinical Infectious Diseases

Published on behalf of Infectious Diseases Society of America

Volume 30, issue 3, pages 520-528
Published in print March 2000 | ISSN: 1058-4838
Published online March 2000 | e-ISSN: 1537-6591 | DOI: http://dx.doi.org/10.1086/313716
Impact of Penicillin Susceptibility on Medical Outcomes for Adult Patients with Bacteremic Pneumococcal Pneumonia

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The impact of penicillin susceptibility on medical outcomes for adult patients with bacteremic pneumococcal pneumonia was evaluated in a retrospective cohort study conducted during population-based surveillance for invasive pneumococcal disease in the greater Atlanta region during 1994. Of the 192 study patients, 44 (23%) were infected with pneumococcal strains that demonstrated some degree of penicillin nonsusceptibility. Compared with patients infected with penicillin-susceptible pneumococcal strains, patients whose isolates were nonsusceptible had a significantly greater risk of in-hospital death due to pneumonia (relative risk [RR], 2.1; 95% confidence interval [CI], 1–4.3) and suppurative complications of infection (RR, 4.5; 95% CI, 1–19.3), although only risk of suppurative complications remained statistically significant after adjustment for baseline differences in severity of illness. Among adults with bacteremic pneumococcal pneumonia, infection with penicillin-nonsusceptible pneumococci is associated with an increased risk of adverse outcome.

Journal Article.  5698 words.  Illustrated.

Subjects: Infectious Diseases ; Immunology ; Public Health and Epidemiology ; Microbiology

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