How vectors cause disease in human beings? Give examples also. Ans for class 9
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A vector picks up the disease from an infected host or the environment then transfers it to a new host through a bite when feeding or by mechanical transmission such as defecating on the skin or from particles on the outside of the body.
Examples:
Malaria (protozoan): Anopheles species of mosquito.
Lymphatic filariasis (nematode worm): Culex, Anopheles, Aedes species of mosquito.
Dengue (virus): Aedes species of mosquito.
Leishmaniasis (protozoan): mainly Phlebotomus species of sandfly.
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