Control of malaria vectors: cost analysis in a province of northern Vietnam.
The cost of permethrin-treated bednets (50% EC; 0.2 g/m2, 2 rounds per year) was compared to the cost of residual spraying with lambdacyhalothrin 10% WP (0.03 g/m2, once yearly) in Hoa Binh, a mountainous province in northern Vietnam. Calculations of the amounts of insecticides needed were based on national guidelines, on data from a cross-sectional survey and on district activity reports. The actual cost of insecticide required per person per year was lower for impregnation (US$ 0.26) than for spraying (US$ 0.36), but the difference was smaller than expected. The total cost for impregnated bednets per person per year amounted to US$ 0.90 compared to USS 0.47 for spraying. The determining factor was the cost of the net, amounting to US$ 0.58 per person per year, assuming a 5-year life of the net. Other material (excluding nets), labour and transport combined, accounted for only 17% of the impregnation cost and 23% of spraying expenses. However, for the National Malaria Control Programme of Vietnam, the cost per person per year for impregnated bednets amounted to US$ 0.32 only, because the vast majority of nets are bought by the population. For spraying, the programme had to bear the entire cost.
Verlé
P
P
Institute for Tropical Medicine Prince Leopold, Antwerp, Belgium.
Lieu
T T
TT
Kongs
A
A
Van der Stuyft
P
P
Coosemans
M
M
D000818:Animals; D000852:Anopheles; D001512:Bedding and Linens; D003362:Cost-Benefit Analysis; D003430:Cross-Sectional Studies; D006801:Humans; D007303:Insect Vectors; D007306:Insecticides / Q000191:economics*; D008288:Malaria / Q000517:prevention & control*; D009032:Mosquito Control / Q000191:economics* / Q000379:methods; D009313:National Health Programs; D009570:Nitriles; D026023:Permethrin; D011722:Pyrethrins / Q000191:economics; D014744:Vietnam
D007306:Insecticides; D009570:Nitriles; D011722:Pyrethrins; D026023:Permethrin; C037304:cyhalothrin