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Characterization of Multidrug-Resistant Group B Streptococci with Reduced Penicillin Susceptibility Forming Small Non-Beta-Hemolytic Colonies on Sheep Blood Agar Plates |
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| Authors: | Hirotsugu Banno Kouji Kimura Yosuke Tanaka Hiromitsu Kitanaka Wanchun Jin Jun-ichi Wachino Keiko Yamada Keigo Shibayama Yoshichika Arakawa |
| Institution: | aDepartment of Bacteriology, Nagoya University Graduate School of Medicine, Aichi, Japan;bDepartment of Bacteriology II, National Institute of Infectious Diseases, Tokyo, Japan;cDepartment of Microbiology Laboratory, Yokohama City Seibu Hospital, St. Marianna University School of Medicine, Kanagawa, 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. |
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