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J Clin Microbiol. 2014 Jun;52(6):2169-71. doi: 10.1128/JCM.00226-14. Epub 2014 Mar 12.

Characterization of multidrug-resistant group B streptococci with reduced penicillin susceptibility forming small non-Beta-hemolytic colonies on sheep blood agar plates.

Author information

1
Department of Bacteriology, Nagoya University Graduate School of Medicine, Aichi, Japan.
2
Department of Bacteriology, Nagoya University Graduate School of Medicine, Aichi, Japan Department of Bacteriology II, National Institute of Infectious Diseases, Tokyo, Japan koujikim@med.nagoya-u.ac.jp.
3
Department of Microbiology Laboratory, Yokohama City Seibu Hospital, St. Marianna University School of Medicine, Kanagawa, Japan.
4
Department of Bacteriology, Nagoya University Graduate School of Medicine, Aichi, Japan Department of Bacteriology II, National Institute of Infectious Diseases, Tokyo, Japan.
5
Department of Bacteriology II, National Institute of Infectious Diseases, Tokyo, Japan.

Abstract

We isolated and characterized three multidrug-resistant clinical isolates of group B streptococci with reduced penicillin susceptibility (PRGBS) that formed small non-beta-hemolytic colonies on sheep blood agar plates but grew well on chocolate agar plates. They can be overlooked in the bacterial identification step, leading to clinical misdiagnosis and treatment failure.

PMID:
24622103
PMCID:
PMC4042806
DOI:
10.1128/JCM.00226-14
[Indexed for MEDLINE]
Free PMC Article
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