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Inducing Meningococcal Meningitis Serogroup C in Mice via Intracisternal Delivery
Published on: November 5, 2019
[Meningococcal disease]
1Arbeitsgemeinschaft Meningokokken des Deutschen Grünen Kreuzes e.V. sd.internat.immun.consult@t-online.de
Abstract:
Due to a high complication and case fatality rate, meningococcal diseases are important health problems both in tropical countries experiencing severe epidemics as well as in countries of moderate climate zones. Worldwide N. meningitidis of sero-groups A, B, and C are predominant and to a lesser extent serogroups W (135) and Y play a role, whereas in Europe more than 90 % of meningococcal diseases are caused by serogroups B and C of N. meningitidis. In Germany and other developed countries the majority of cases occur in very young children and adolescents. Since many years, meningococcal polysaccharide vaccines against diseases due to N.meningitidis serogroup A, C, Y and W (135) are commercially available. Unfortunately, a vaccine against diseases caused by N. meningitidis serogroup B is still under development. The recently developed and licensed conjugated meningococcal vaccines against N. meningitidis serogroup C are also protective against disease in very young children. Eight countries in Western Europe as well as Australia have already established country-wide immunization programs for children and adolescents. Within only 2 to 3 years, well managed programs have achieved far-reaching control of meningococcal C disease in UK and the Netherlands. In Germany, the Advisory Committee on Immunization (STIKO recommends immunization for selected risk groups. The current increase of the percentage of meningococcal C diseases to 28 - 30 % gives reason for further discussion regarding immunization strategies. How-ever, the STIKO expressively declares, that in addition to the recommendation for risk groups, the physician can use all vaccines licensed in Germany without any restriction. It is his/her responsibility to advice the patients regarding immunization possibilities against the life-threatening meningococcal disease, particularly if cases are occurring.
Insights
Meningococcal diseases pose significant health risks globally. While vaccines exist for serogroups A, C, Y, and W, a serogroup B vaccine is still developing, necessitating ongoing discussions on immunization strategies.
Area of Science:
- Bacteriology
- Epidemiology
- Vaccinology
Context:
- Meningococcal diseases, caused by Neisseria meningitidis, present a substantial global health challenge with high fatality rates.
- Serogroups A, B, and C are predominant worldwide, with serogroups B and C being most common in Europe, primarily affecting young children and adolescents.
- Existing polysaccharide vaccines cover serogroups A, C, Y, and W-135, but a vaccine for serogroup B remains under development.
Purpose:
- To review the epidemiology of meningococcal diseases and current vaccination strategies.
- To discuss the impact of newly developed conjugated meningococcal vaccines, particularly for serogroup C.
- To highlight the ongoing need for effective immunization strategies, especially concerning serogroup B and rising serogroup C cases.
Summary:
- Conjugated meningococcal vaccines against serogroup C have proven effective, leading to successful control programs in countries like the UK and Netherlands.
- In Germany, the Standing Committee on Vaccination (STIKO) recommends immunization for specific risk groups, but physicians can administer all licensed vaccines.
- The increasing incidence of meningococcal C disease necessitates further discussion on immunization strategies, with a focus on protecting vulnerable populations.
Impact:
- Successful implementation of meningococcal C conjugate vaccines has led to significant disease control in several European nations.
- The development of new vaccines and ongoing epidemiological surveillance are crucial for managing and preventing meningococcal disease outbreaks.
- Physicians play a vital role in advising patients on available immunization options against life-threatening meningococcal infections.
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