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Published on: August 16, 2011
Schistosomiasis vaccine development: approaches and prospects
1UNDP/World Bank/WHO Special Programme for Research and Training in Tropical Diseases (TDR), WHO, Geneva, Switzerland.
Memorias Do Instituto Oswaldo Cruz
|March 1, 1995
Summary
Developing a schistosomiasis vaccine is promising, despite challenges like reinfection in young individuals. Targeting multiple host-parasite interactions could enhance vaccine efficacy and reduce disease severity.
Area of Science:
- Immunology
- Vaccinology
- Parasitology
Background:
- Acquired immunity to schistosomiasis in humans is increasingly evident, supporting immunological interventions.
- Younger populations are vulnerable to rapid reinfection due to immature natural resistance.
- Advances in immunology and molecular biology offer new possibilities for vaccine development.
Purpose of the Study:
- To explore the potential of immunological interventions for schistosomiasis control.
- To assess strategies for overcoming challenges in vaccine development, such as reinfection.
- To identify promising schistosome antigens for vaccine candidates.
Main Methods:
- Review of evidence for acquired immunity and challenges in natural resistance.
- Analysis of host-parasite interactions for potential vaccine targets.
- Evaluation of schistosome antigens in advanced development and testing phases.
Main Results:
- Complete protection is not essential; reducing worm burden and egg production can decrease morbidity.
- Several promising schistosome antigens are in advanced development and undergoing confirmatory testing.
- One vaccine candidate has progressed to industrial manufacture and safety testing.
Conclusions:
- Vaccination against schistosomiasis is a viable strategy, especially when combined with chemotherapy.
- Targeting multiple host-parasite interfaces can improve vaccine effectiveness and reduce disease burden.
- Schistosomiasis control requires integrated approaches, with vaccination as a key component alongside existing methods.
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