Genotyping Method for Streptococcus agalactiae Using MLVA
Author Information
Author(s): Haguenoer Eve, Baty Gaelle, Pourcel Christine, Lartigue Marie-Frédérique, Domelier Anne-Sophie, Rosenau Agnès, Quentin Roland, Mereghetti Laurent, Lanotte Philippe
Primary Institution: Université François-Rabelais de Tours
Hypothesis
Can a multi locus variable number of tandem repeat analysis (MLVA) scheme improve the genotyping of Streptococcus agalactiae strains compared to multilocus sequence typing (MLST)?
Conclusion
The MLVA scheme is a rapid, cost-effective genotyping method that provides greater discriminatory power than MLST for Streptococcus agalactiae.
Supporting Evidence
- MLVA distinguished 98 genotypes among the 189 strains, while MLST distinguished only 51.
- The diversity index obtained with MLVA was 0.960, indicating high discriminatory power.
- MLVA clusters corresponded well to the main clonal complexes obtained by MLST.
Takeaway
Scientists created a new way to tell different types of a bacteria called Streptococcus agalactiae apart, which helps in understanding and tracking infections better.
Methodology
The study involved analyzing 186 strains of Streptococcus agalactiae using a new MLVA method based on 6 selected VNTR loci.
Limitations
Some strains did not amplify for one of the VNTR loci, which could affect the results.
Participant Demographics
Strains were isolated from humans and cattle, with specific origins including vaginal carriage, gastric fluid, blood, and cerebrospinal fluid.
Statistical Information
Confidence Interval
95% CI [0.943 - 0.978]
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website