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Treated Mosquito Nets Prevent Japanese Encephalitis

by Sheela Philomena on March 11, 2011 at 12:28 PM
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 Treated Mosquito Nets Prevent Japanese Encephalitis

Use of insecticide treated mosquito nets could reduce the transmission of Japanese Encephalitis (JE) to humans, revealed in a study.

The study conducted by the Regional Medical Research Centre (RMRC), Dibrugarh, North East Region (NE), Indian Council of Medical Research and showed that the use of insecticide-treated mosquito nets (ITMNs) on humans and pigs reduced transmission of JE 72 percent in humans.

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The study looked at the effectiveness of using ITMNs to protect both pig and human populations. It evaluated the efficacy of reducing the transmission of JE in areas where high virus activity has been reported.

The JE virus multiplies rapidly in pigs, considered by experts to be a key element in the natural cycle of the virus and its transmission to humans.
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Sharp drops in infection rates were found in three locations following the use of ITMNs. In one location, the nets were used to protect both humans and pigs which resulted in the greatest drop in infection rates (72 percent), compared with areas where treated mosquito nets protected only humans (67 percent) or pigs (56 percent).

"We are pleased that the results of this study show that ITMNs are extremely effective against JE. Educating people in JE-prone areas that using ITMNs will help reduce the transmission of the disease without disturbing social customs in these communities. We believe that this will, in turn, reduce mortality associated with JE while keeping communities healthy and productive, further improving the global economy," said Prafulla Dutta, Scientist, RMRC, NE.

The researchers noted that insecticide components, particularly pyrethroids, are gaining importance in mosquito control because of their low toxicity towards mammals and the strong repellant impact on mosquitoes.

The findings have been published in the American Journal of Tropical Medicine and Hygiene.

Source: ANI
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