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'Olyset' mosquito net, Japan, 2005

This plastic weave mosquito net provides both a physical and a chemical barrier against the malaria-carrying mosquito. The net is covered with a chemical called Peremetherin, an insecticide which kills insects on first contact. The net is classified as a Long Lasting Insecticidal Net (LLIN) and its chemical coating will remain active for a minimum of five years. Sumitomo Chemical Co Ltd developed the ‘Olyset’ mosquito net in 1978, but it was not approved by the World Health Organisation (WHO) until 2001. In 2006 the net was mass produced as part of a WHO international anti-malaria campaign, which was particularly focussed on Africa.

Object number:

2006-131

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Glossary:

Glossary: mosquito net

A see-through net to keep off mosquitoes. The mesh used is fine enough to exclude these insects, but it does not completely impede the flow of air. Mosquito nets are often used where malaria or other insect-borne diseases are common, especially as a tent-like covering over a bed. For effectiveness, it is important that the netting not have holes or gaps large enough to allow insects to enter.

Glossary: malaria

Parasitic disease transmitted by certain kinds of mosquito. Malaria is characterized by fever and enlargement of the spleen. Each year, there are approximately 515 million cases of malaria, killing between one and three million people.