By Kieran Guilbert LONDON (Thomson Reuters Foundation) - Spraying insecticides indoors offers children no additional protection from malaria when bed nets are used, a study said on Tuesday, as malaria cases and deaths worldwide continue to fall. A study by medical journal The Lancet said donors should invest their limited resources on additional bed nets as the most cost-effective solution to tackling malaria, costing an average of $2.20 per person compared to $6.70 for insecticide. ...
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