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Use of repellents as prophylactic agents
1Bayer AG, Bayer Crop Science, Environmental Science, Environmental Health, 51368 Leverkusen, Germany. Guenther.Nentwig.GN@bayer-ag.de
Parasitology Research
|June 18, 2003
Summary
Insect repellents, from plant-based to synthetic compounds like DEET, offer personal protection. Research continues to explore new formulations and systemic options for improved efficacy and duration.
Area of Science:
- Entomology and Public Health
- Chemical Ecology
- Toxicology
Background:
- Biting insects pose significant public health risks as disease vectors and pests.
- Personal protection through insect repellents is a crucial strategy to prevent bites.
- Historically, plant-derived substances like citronella oil were primary repellents.
Purpose of the Study:
- To review the efficacy and toxicity of various insect repellent compounds.
- To explore advancements in repellent formulation and delivery systems.
- To assess the potential of novel repellent compounds and strategies.
Main Methods:
- Systematic evaluation of synthetic repellents, initiated during World War II.
- Review of established repellents such as DEET, dimethylphthalate, and ethyl hexane diol.
- Analysis of newer compounds including MERCK 3535, p-menthane-3,8 diol, CIC 4, AI3-37220, and Icaridin.
Main Results:
- DEET remains a primary synthetic repellent, with other compounds showing varying importance.
- Newer research has identified promising candidates like Icaridin and MERCK 3535.
- Toxicity and efficacy data are crucial for evaluating repellent effectiveness.
Conclusions:
- Development of advanced formulations can enhance cosmetic properties and prolong efficacy.
- Alternative applications, such as slow-release and systemic repellents, are under investigation.
- Current research has not yet yielded successful systemic or long-range repellent solutions.