1921
Volume 81, Issue 4
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645

Abstract

A single round of indoor residual spraying (IRS) using lambda-cyhalothrin was implemented in a district of Uganda with moderate transmission intensity in 2007. Individual patient data were collected from one health facility within the district 8 months before and 16 months after IRS. There was a consistent decrease in the proportion of patients diagnosed with clinical malaria after IRS for patients < 5 and > 5 years of age (52% versus 26%, < 0.001 and 36% versus 23%, < 0.001, respectively). There was a large decrease in the proportion of positive blood smears in the first 4 months after IRS for patients < 5 (47% versus 14%, < 0.001) and > 5 (26% versus 9%, < 0.001) years of age, but this effect waned over the subsequent 12 months. IRS was effective in reducing malaria morbidity, but this was not sustained beyond 1 year for the proportion of blood smears read as positive.

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  • Received : 12 Mar 2009
  • Accepted : 04 Jun 2009

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