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Inducing Meningococcal Meningitis Serogroup C in Mice via Intracisternal Delivery
Published on: November 5, 2019
Abstract:
In spite of considerable success in the development of drugs and vaccines, the problem of disease due to Neisseria meningitidis is far from solved. As late as the 1970s, epidemics of meningococcal disease occurred in at least 30 countries in all parts of the world. Most of the epidemics were caused by group A organisms, but epidemics due to groups B and C also took place occasionally. The case/fatality rate was usually less than 10% among patients with true meningitis; among those with "pure" septicemia, it was as high as 70%. Children less than five years old are most prone to meningococcal disease, but mortality is often highest among young adults. Because close contacts of the index case are at considerable risk--at least several hundred times higher than in the rest of the population--they should be protected immediately with an appropriate antibiotic and, if possible, with a vaccine as well. At the present time, however, no vaccine is available for use against group B organisms, which in nonepidemic conditions are the most prevalent of all meningococci.
Insights
Meningococcal disease remains a global health threat, particularly affecting young children and adults. Immediate antibiotic and vaccine protection is crucial for close contacts, though a vaccine for prevalent Group B strains is currently unavailable.
Area of Science:
- Microbiology and Infectious Diseases
- Epidemiology
- Vaccinology
Background:
- Neisseria meningitidis causes significant global disease, with epidemics reported worldwide through the 1970s.
- Disease presentation varies, with meningitis having a case fatality rate under 10% and septicemia reaching 70%.
Purpose of the Study:
- To highlight the ongoing challenge of meningococcal disease despite advances in therapeutics.
- To emphasize the need for immediate protective measures for close contacts of infected individuals.
Main Methods:
- Review of historical epidemic data and disease characteristics.
- Analysis of risk factors and mortality rates across different age groups and disease presentations.
Main Results:
- Epidemics were primarily caused by Group A, with occasional Group B and C outbreaks.
- Children under five are most susceptible, while young adults experience higher mortality.
- Close contacts face significantly elevated risk, necessitating prompt antibiotic and vaccine intervention.
Conclusions:
- Meningococcal disease control requires ongoing vigilance and improved prevention strategies.
- The lack of a vaccine against the prevalent Group B strains presents a critical public health gap.
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