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Mosquitoes feed on blood by sucking from the hosts body by means of a fine tube called the proboscus. This syringe like tube is very sharp, it is inserted into the skin at the selected site. An anti-coagulant is squirted into the area to prevent clotting of the blood until the mosquito has fed. It is an intolerance, or allergy, to this anti-coagulant that causes the annoying itch later.

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15y ago

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