Mosquito
nets provide a degree of personal protection against night-biting mosquitoes
and other night-biting insects, provided that the nets are intact and the mesh
is fine enough.If used by a large proportion of a community, treated nets
suppress the vector population and hence disease transmission.These nets have
the advantages like requiring less insecticide use compared to insecticide spraying,effective
protection of communities and easily usage by anyone living in the house.
Clinical trials have also indicated that treating mosquito nets with
insecticide could be a potentially cost-effective method of preventing
mosquitoes.Insecticide-impregnated bed nets significantly reduce mortality and
morbidity, as well as the incidence of severe malaria and give greater
protection than nonimpregnated bed nets. Pyrethroids are the only insecticides
currently recommended for treatment of mosquito nets.Being highly
lipophilic,pyrethroids pass through cell membranes anda re absorbed through the
skib,by inhalation and by ingestion. However,their rapid matabolism greatly
lowers the magnitude of the resultant toxicity.The volatility of pyrethroids is
also low;given the low dosages of insecticide used for the treatment of
nets,the risk of inhalation toxicity by the users of treated nets is remote. A
study showed that treated eave and door curtains significantly reduced child
mortality due to malaria.Symptoms of poisoning due to treatment or use of
mosquito nets are rare, apart from transient numbness or tingling if there has
been significant dermal contact and synthetic pyrethroids in mosquito nets have
low toxicity and volatility to mammals,a high insecticidal activity. In long
term toxicity studies of pyrethroid insecticides commonly used for treatment of
mosquito nets,no teratogenic,carcinogenic or mutagenic effects have been
detected in experimental animals. Insecticides used for treatment of mosquito nets
are not harmful to people if used correctly. Although the pyrethroids used to
treat bednets are relatively safe,vector control programes should still involve
a degree of supervision or training.
Keywords:
Insecticide-impregnated
bed nets, human safety, mosquito nets
Journal Section | Articles |
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Authors | |
Publication Date | February 1, 2017 |
Published in Issue | Year 2017 Issue: Issue 1(2) - 3. INTERNATIONAL BIOCIDAL CONGRESS |