Clinical trial tests insecticide-treated underwear to ward off body lice in shelters

Providing insecticide-treated underwear to people in homeless shelters was effective in eliminating body lice infestations, but the effect did not last and resistance to insecticide resistance increased, according to the results of a clinical trial by Samir Benkouiten, M.P.H., of Aix Marseille Université, France, and colleagues.