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Vaccines against meningococcal serogroup B disease containing outer membrane vesicles (OMV): lessons from past
Johan Holst1, Philipp Oster, Richard Arnold
1Division of Infectious Disease Control; Norwegian Institute of Public Health; Oslo, Norway.
Abstract:
The utility of wild-type outer membrane vesicle (wtOMV) vaccines against serogroup B (MenB) meningococcal disease has been explored since the 1970s. Public health interventions in Cuba, Norway and New Zealand have demonstrated that these protein-based vaccines can prevent MenB disease. Data from large clinical studies and retrospective statistical analyses in New Zealand give effectiveness estimates of at least 70%. A consistent pattern of moderately reactogenic and safe vaccines has been seen with the use of approximately 60 million doses of three different wtOMV vaccine formulations. The key limitation of conventional wtOMV vaccines is their lack of broad protective activity against the large diversity of MenB strains circulating globally. The public health intervention in New Zealand (between 2004-2008) when MeNZB was used to control a clonal MenB epidemic, provided a number of new insights regarding international and public-private collaboration, vaccine safety surveillance, vaccine effectiveness estimates and communication to the public. The experience with wtOMV vaccines also provide important information for the next generation of MenB vaccines designed to give more comprehensive protection against multiple strains.
Insights
Wild-type outer membrane vesicle (wtOMV) vaccines show moderate effectiveness against meningococcal serogroup B (MenB) disease. However, their limited strain coverage necessitates the development of next-generation MenB vaccines.
Area of Science:
- Vaccinology
- Microbiology
- Public Health
Background:
- Wild-type outer membrane vesicle (wtOMV) vaccines have been investigated for serogroup B (MenB) meningococcal disease since the 1970s.
- Public health interventions in Cuba, Norway, and New Zealand have confirmed the efficacy of these protein-based vaccines in preventing MenB disease.
- Approximately 60 million doses of three distinct wtOMV vaccine formulations have been administered, demonstrating a consistent profile of moderate reactogenicity and safety.
Purpose of the Study:
- To evaluate the historical utility and effectiveness of wtOMV vaccines against MenB disease.
- To analyze the insights gained from public health interventions, particularly in New Zealand, regarding vaccine safety, effectiveness, and public communication.
- To inform the development of next-generation MenB vaccines with broader protective capabilities.
Main Methods:
- Review of clinical studies and retrospective statistical analyses from New Zealand.
- Examination of public health intervention data from Cuba, Norway, and New Zealand.
- Analysis of safety and effectiveness data from approximately 60 million administered vaccine doses.
Main Results:
- wtOMV vaccines demonstrate effectiveness of at least 70% in preventing MenB disease, as evidenced by New Zealand data.
- Vaccines exhibit moderate reactogenicity and a favorable safety profile.
- A significant limitation is the lack of broad protective activity against diverse global MenB strains.
Conclusions:
- wtOMV vaccines have a proven track record in controlling MenB disease, with substantial real-world effectiveness.
- The New Zealand MeNZB intervention provided valuable lessons in collaboration, surveillance, and public engagement.
- Future MenB vaccine development should focus on overcoming the strain-specificity limitations of current wtOMV vaccines to achieve comprehensive protection.
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