Journal of The Academy of Clinical Microbiologists

Register      Login

VOLUME 26 , ISSUE 2 ( July-December, 2024 ) > List of Articles

CASE REPORT

Prosthetic Valve Endocarditis by Streptococcus agalactiae (Group B Streptococci)

Kavita Raja, Sravan Kumar, Dinoop K Ponnambath, Jyothi E Kaviyil

Keywords : Case report, 16S ribosomal ribonucleic acid sequencing, Infective endocarditis, Pediococcus, Prosthetic valve endocarditis, S. agalactiae

Citation Information : Raja K, Kumar S, Ponnambath DK, Kaviyil JE. Prosthetic Valve Endocarditis by Streptococcus agalactiae (Group B Streptococci). J Acad Clin Microbiol 2024; 26 (2):54-57.

DOI: 10.5005/jacm-11020-0009

License: CC BY-NC 4.0

Published Online: 17-01-2025

Copyright Statement:  Copyright © 2024; The Author(s).


Abstract

Streptococcus agalactiae, a beta-hemolytic group B streptococcus (GBS) that causes neonatal meningitis and sepsis, is very rarely reported in infective endocarditis (IE). Here, we report a case of late prosthetic aortic valve IE caused by S. agalactiae, which was misidentified as Pediococcus pentosaceus in the VITEK 2 identification system. The identification was confirmed by matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) and Sanger's sequencing. The probable cause of the misidentification is discussed. The patient was started on appropriate therapy based on antimicrobial susceptibility testing. At 3 months of follow-up, he was afebrile with normal prosthetic valve function.


PDF Share
  1. Fowler VG, Durack DT, Selton-Suty C, et al. The 2023 Duke-International Society for Cardiovascular Infectious Diseases Criteria for Infective Endocarditis: Updating the Modified Duke Criteria. Clinical Infectious Diseases 2023;77(4):518–526. DOI: 10.1093/cid/ciad271
  2. Arora N, Panda PK, Cr P, et al. Changing spectrum of infective endocarditis in India: an 11-year experience from an academic hospital in North India. Indian Heart J 2021;73(6):711–717. DOI: 10.1016/j.ihj.2021.09.008
  3. Chang M, Cunha BA. Streptococcus agalactiae infective endocarditis. Infect Dis Clin Pract 2004;12(2):107–109. DOI: 10.1097/01.idc.0000121026.62151.5b
  4. Sambola A, Miro JM, Tornos MP, et al. Streptococcus agalactiae infective endocarditis: analysis of 30 cases and review of the literature, 1962–1998. Clin Infect Dis 2002;34:1576–1584. DOI: 10.1086/340538
  5. Cai Y, Kumai S, Ogawa M, et al. Characterization and identification of Pediococcus Species isolated from forage crops and their application for silage preparation. Appl Environ Microbiol 1999;65(7):2901–2906. DOI: 10.1128/aem.65.7.2901-2906.1999
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.