Optochin-resistant variants of Streptococcus pneumoniae.

Diagn Microbiol Infect Dis

Servicio de Bacteriologia, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain.

Published: June 1990

Ten Streptococcus pneumoniae clinical isolates, possessing physiologically typical pneumococcal characteristics, showed optochin-susceptible and optochin-resistant colonies around the optochin disk, when tested for optochin susceptibility. Equivocal optochin disk test results should be confirmed by bile solubility, agglutination tests, or both.

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http://dx.doi.org/10.1016/0732-8893(90)90056-2DOI Listing

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