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Updated: Jan 26, 2026

Capsular Serotyping of Streptococcus pneumoniae by Latex Agglutination
Published on: September 25, 2014
Complete Genome Sequence of a Sequence Type 4846 Streptococcus pneumoniae Serotype 12F Strain Isolated from a
Bin Chang1, Masatomo Morita2, Ken-Ichi Lee2
1Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan b-chang@nih.go.jp.
Abstract:
Streptococcus pneumoniae serotype 12F rarely colonizes the nasopharynx but commonly causes invasive pneumococcal disease. Here, we report the complete genome sequence of a sequence type 4846 (ST4846) S. pneumoniae serotype 12F strain isolated from a cluster of invasive pneumococcal disease patients in Japan.
Insights
Streptococcus pneumoniae serotype 12F rarely colonizes but causes invasive disease. This study reports the complete genome sequence of a 12F strain linked to invasive pneumococcal disease in Japan.
Area of Science:
- Microbiology
- Genomics
- Infectious Diseases
Background:
- Streptococcus pneumoniae serotype 12F is an uncommon colonizer of the nasopharynx.
- This serotype is frequently associated with invasive pneumococcal disease.
- Understanding the genetic makeup of invasive strains is crucial for public health.
Purpose of the Study:
- To report the complete genome sequence of a Streptococcus pneumoniae serotype 12F strain.
- To analyze the genetic characteristics of a strain isolated from invasive pneumococcal disease patients.
Main Methods:
- Whole-genome sequencing of the S. pneumoniae serotype 12F isolate.
- Bioinformatic analysis of the obtained genome sequence.
- Phylogenetic analysis to determine the sequence type.
Main Results:
- The complete genome sequence of a Streptococcus pneumoniae serotype 12F strain, designated ST4846, was determined.
- The strain was isolated from a cluster of patients with invasive pneumococcal disease in Japan.
- The genome sequence provides a basis for understanding the genetic determinants of virulence and invasiveness.
Conclusions:
- The availability of the complete genome sequence of this S. pneumoniae serotype 12F strain facilitates further research into its pathogenic potential.
- This genomic data can aid in developing targeted interventions against invasive pneumococcal disease caused by this serotype.
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