Characteristics of Streptococcus pseudopneumoniae isolated from purulent sputum samples

Journal of Clinical Microbiology
Elaine R KeithDavid R Murdoch

Abstract

Streptococcus pseudopneumoniae is a recently described streptococcus that is phenotypically and genetically distinct from Streptococcus pneumoniae and other viridans streptococci. Key characteristics of S. pseudopneumoniae are the absence of a pneumococcal capsule, insolubility in bile, resistance or indeterminate susceptibility to optochin when incubated in 5% CO2 but susceptibility to optochin when incubated in ambient air, and a positive reaction with the AccuProbe DNA probe hybridization test. The clinical importance of this bacterium is currently unknown. We report the characteristics and associated clinical data of 35 strains of S. pseudopneumoniae isolated from sputum samples from 33 patients. All isolates produced a positive result with the NOW S. pneumoniae antigen test (Binax, Inc.). No isolate was resistant to penicillin, but 60% were resistant to erythromycin and 77% were resistant to tetracycline. All patients had lower respiratory tract symptoms, 79% had chronic obstructive pulmonary disease (COPD), and 33% had chest radiographic infiltrates. Compared with matched control patients who had Streptococcus pneumoniae isolated from sputum, patients with S. pseudopneumoniae infection were more likely to have a history o...Continue Reading

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Citations

Nov 5, 2011·European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology·L SelvaC Muñoz-Almagro
Feb 12, 2008·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·Anja M Werno, David R Murdoch
Jun 4, 2008·Antimicrobial Agents and Chemotherapy·Elaine R Keith, David R Murdoch
May 31, 2012·Antimicrobial Agents and Chemotherapy·C LaurensH Jean-Pierre
Jun 1, 2007·Journal of Clinical Microbiology·Maria da Gloria S CarvalhoJacquelyn S Sampson
Dec 25, 2013·Experimental & Applied Acarology·László Egyed, László Makrai
Jul 26, 2013·International Ophthalmology·Hideaki KawakamiHiroshige Mikamo
Apr 25, 2016·Diagnostic Microbiology and Infectious Disease·Alexandra S SimõesRaquel Sá-Leão
Dec 3, 2010·Journal of Chemotherapy·B Butorac-PetanjekS Popovic-Grle
Feb 12, 2015·Microbiome·Alissa S HanshewSusan L Thibeault
Sep 24, 2013·The Journal of Infection·Arnau DomenechJosefina Liñares
Dec 3, 2014·Applied Biochemistry and Biotechnology·Ana Paula Corrêa ArgondizzoMarco Alberto Medeiros
Oct 26, 2011·Clinical Microbiology and Infection : the Official Publication of the European Society of Clinical Microbiology and Infectious Diseases·V SistekM G Bergeron
Dec 3, 2015·Journal of Medical Microbiology·Marrit N HabetsDimitri A Diavatopoulos
Jan 30, 2014·Infection & chemotherapy·Joon Young SongMoon H Nahm
Jul 4, 2019·Journal of Medical Microbiology·Lucia Gonzales-SilesEdward R B Moore
May 26, 2017·Gerodontology·Elizabeth BoadenCaroline Watkins
Jun 27, 2019·MBio·Geneviève GarrissBirgitta Henriques-Normark
Nov 25, 2019·Journal of Cystic Fibrosis : Official Journal of the European Cystic Fibrosis Society·Chloé DupontHélène Marchandin

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