Relative Repellency of Two Formulations of N,N-Diethyl-3-Methylbenzamide (DEET) and Permethrin-Treated Clothing Against Culex sitiens and Aedes vigilax in Thailand

Abstract

Field tests were conducted to compare the effectiveness of 2 repellent formulations of N,N-diethyl-3-methylbenzamide (deet) in combination with permethrin-impregnated military uniforms against Culex sitiens and Aedes vigilax in Thailand. Repellency was determined during a 2 h crepuscular period using volunteers who had been treated with repellents 6, 8, 10, and 12 h prior to the end of each test period. An extended-duration repellent formulation (EDRF) containing 35% deet repelled significantly more Ae. vigilax than 75% deet in ethanol. Although not statistically significant, the EDRF also resulted in fewer biting attempts by Cx. sitiens. Neither formulation provided complete protection against either species 4-12 h post-application, but both provided greater overall protection against Ae. vigilax. Volunteers who wore treated uniforms without repellents were attacked by significantly fewer mosquitoes than controls.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1990
Accession Number
ADA513029

Entities

People

  • Douglas B. Tang
  • John B. Gingrich
  • Ralph E. Harbach
  • Robert A. Wirtz

Organizations

  • Walter Reed Army Institute of Research

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Abstracts
  • Arthropod Borne Diseases
  • Clothing
  • Data Analysis
  • Data Science
  • Encephalitis
  • Field Tests
  • Information Science
  • Materials
  • Mathematics
  • Medical Personnel
  • Military Uniforms
  • Statistics
  • Thailand
  • Uniforms
  • Viruses
  • Volunteers

Readers

  • Vector-Borne Disease and Entomology