🔬 Discovery

Insecticide-treated bednet trial (Asembo Bay)

Ensayo de mosquiteras tratadas con insecticida (bahía de Asembo)

Date
1996-1999 · confidence medium
Place
Asembo Bay, Siaya, Kenya
Credited to
KEMRI and the CDC (Penelope Phillips-Howard, Feiko ter Kuile and others)
Field
Life & health

⚠️ Disputed: the sources disagree.

What was discovered

A village-randomised trial in western Kenya showing that permethrin-impregnated bednets reduced child mortality. Together with Gambia, Ghana and Burkina Faso, it supported their mass use against malaria.

Results were published in 2003 (American Journal of Tropical Medicine and Hygiene supplement); fieldwork was carried out in 1996-1999. Other African trials (Gambia, Ghana, Burkina Faso) were earlier.

What it led to

  • mass distribution of bednets in sub-Saharan Africa from the 2000s
  • Roll Back Malaria and Global Fund policies
  • effects on anaemia and birth weight

Links

Sources✓ verified 2026-11-04