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Related Concept Videos

Streptococcal Pharyngitis01:27

Streptococcal Pharyngitis

Streptococcal pharyngitis, commonly known as “strep throat,” is an acute infection of the oropharyngeal tissues caused by the Gram‑positive Group A Streptococcus (Streptococcus pyogenes). Transmission occurs primarily through respiratory droplets expelled during coughing, sneezing, or talking.Mechanisms of Host Entry and Immune EvasionUpon entering the host, S. pyogenes adheres to the mucosal epithelial cells of the pharynx via surface proteins, notably lipoteichoic acid and the antiphagocytic...
Microorganisms in Medicine and Therapeutics01:29

Microorganisms in Medicine and Therapeutics

Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
Bacterial Meningitis I: Introduction01:22

Bacterial Meningitis I: Introduction

Bacterial meningitis is a severe, life-threatening inflammation of the meninges, particularly the pia mater and arachnoid mater, affecting the subarachnoid space, ventricles, and cerebrospinal fluid (CSF). If untreated, it can lead to significant neurological complications or death.Causative AgentsCommon pathogens vary with age and immune status. In adults, major organisms include Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. Streptococcus agalactiae (group B...
Smallpox01:24

Smallpox

Smallpox is a severe contagious disease caused by the Variola major virus, a double-stranded DNA member of the Poxviridae family.Variola major transmission occurs primarily via inhalation of virus-laden droplets or direct contact with infectious scabs. The incubation period averages approximately seven days, although it may range from 7 to 17 days depending on the inoculum and host factors.Clinically, the prodromal phase is marked by an abrupt onset of high fever, malaise, headache, and myalgia.
Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
Vaccinations01:51

Vaccinations

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Related Experiment Video

Updated: Jul 19, 2026

A Murine Model of Group B Streptococcus Vaginal Colonization
10:19

A Murine Model of Group B Streptococcus Vaginal Colonization

Published on: November 16, 2016

Group B Streptococcus: global incidence and vaccine development.

Atul Kumar Johri1, Lawrence C Paoletti, Philippe Glaser

  • 1School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India. akjohri14@yahoo.com

Nature Reviews. Microbiology
|November 8, 2006
PubMed
Summary

Developing broadly effective vaccines against Group B Streptococcus (GBS) is crucial for global health. This review explores innovative strategies to create GBS vaccines that work worldwide, not just in specific regions.

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Constructing Mutants in Serotype 1 Streptococcus pneumoniae strain 519/43
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Last Updated: Jul 19, 2026

A Murine Model of Group B Streptococcus Vaginal Colonization
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06:06

Constructing Mutants in Serotype 1 Streptococcus pneumoniae strain 519/43

Published on: September 11, 2020

Area of Science:

  • Microbiology
  • Vaccinology
  • Public Health

Background:

  • Group B Streptococcus (GBS) poses a significant global health challenge.
  • Current vaccines are limited by serotype specificity, showing reduced efficacy against strains prevalent outside the US and Europe.
  • There is a critical need for vaccines effective against globally relevant GBS serotypes.

Purpose of the Study:

  • To review current efforts in developing globally effective Group B Streptococcus vaccines.
  • To highlight innovative approaches and new technologies for identifying cross-serotype GBS antigens.
  • To present a template for developing vaccines against other bacterial pathogens.

Main Methods:

  • Review of scientific literature on GBS vaccine development.
  • Analysis of new technologies for antigen discovery.
  • Evaluation of strategies to overcome serotype-specificity in vaccine design.

Main Results:

  • Identification of promising GBS antigens with potential for broad efficacy.
  • Exploration of novel technological platforms for vaccine formulation.
  • Development of a conceptual framework for global bacterial vaccine development.

Conclusions:

  • Innovative approaches are essential to overcome serotype-specific limitations in GBS vaccines.
  • The development of a globally effective GBS vaccine is achievable through novel antigen discovery and technological integration.
  • The strategies discussed offer a model for developing vaccines against other significant bacterial pathogens worldwide.