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Published on: July 17, 2021
Molecular epidemiology of meningococci: application of DNA sequence typing
1Institute for Hygiene and Microbiology, University of Würzburg, Germany. uvogel@hygiene.uni-wuerzburg.de
Abstract:
Neisseria meningitidis is an invasive pathogen contributing significantly to childhood mortality worldwide. The organism is adapted to the human host and transmitted by close contact or droplet aerosols. In comparison to healthy carriage, invasive disease is a rare event. Nevertheless, due to a high case-fatality rate and the fact that meningococcal infection is a communicable disease, molecular typing of meningococci has been driven forward considerably in the past decades. Multilocus and antigen sequence typing data are assembled in large databases accessible via the internet. For epidemiological purposes, representative case ascertainment strategies are necessary if data are to be exploited for trend analysis, geographic visualization, detection of abnormalities such as outbreaks, and prediction of vaccine coverage. In Europe, a consensus for molecular typing has been achieved.
Insights
Neisseria meningitidis causes significant childhood mortality globally. Molecular typing and data sharing are crucial for tracking this invasive pathogen, enabling better epidemiological analysis and vaccine strategies.
Area of Science:
- Microbiology
- Epidemiology
- Public Health
Background:
- Neisseria meningitidis is a major cause of invasive bacterial disease and mortality in children worldwide.
- While invasive disease is rare compared to asymptomatic carriage, its high fatality rate and communicability necessitate robust surveillance.
- Molecular typing methods have advanced significantly for Neisseria meningitidis, aiding in understanding transmission and disease dynamics.
Purpose of the Study:
- To highlight the importance of molecular typing for Neisseria meningitidis surveillance.
- To emphasize the need for effective case ascertainment strategies for epidemiological analysis.
- To discuss the role of data sharing in trend analysis, outbreak detection, and vaccine coverage prediction.
Main Methods:
- Review of advancements in molecular typing techniques for Neisseria meningitidis, including multilocus and antigen sequence typing.
- Discussion of the assembly of typing data into large, internet-accessible databases.
- Consideration of case ascertainment strategies for epidemiological purposes.
Main Results:
- Molecular typing data for Neisseria meningitidis are increasingly available in large databases.
- Consensus on molecular typing approaches has been reached in Europe.
- Effective case ascertainment is vital for leveraging typing data for public health.
Conclusions:
- Molecular typing of Neisseria meningitidis is essential for effective global health surveillance.
- Standardized data collection and analysis are key to understanding disease trends and informing interventions.
- Coordinated efforts, like the European consensus, are crucial for combating meningococcal disease.
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