Bed nets treated with insecticide have been one of the cheapest & most effective methods of combating the spread of Malaria, especially in Africa. When properly deployed they can cut malaria rates by half. Now a team of researchers from Senegal have suggested that mosquitoes may be developing an immunity to the nets and their use has reduced the immunity of children and adults to malaria infection. The researchers argue that the effectiveness of the bed nets reduced the immunity that people acquire through exposure to mosquito bites, while the proportion of the insects with a resistance to one type of pesticide had risen from 8% to 48%. As a result there was a rapid rebound in infection rates. Other researchers suggest that the study was too small to draw any such conclusions as it only looked at one small village.
Posted by Astrojenny
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