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The human flea (Pulex irritans) – once also called the house flea [1] – is a cosmopolitan flea species that has, in spite of the common name, a wide host spectrum. It is one of six species in the genus Pulex ; the other five are all confined to the Nearctic and Neotropical realms . [ 2 ]
Fleas are wingless insects, 1.5 to 3.3 millimetres (1 ⁄ 16 to 1 ⁄ 8 inch) long, that are agile, usually dark colored (for example, the reddish-brown of the cat flea), with a proboscis, or stylet, adapted to feeding by piercing the skin and sucking their host's blood through their epipharynx.
Fleas absorb the insecticide which either paralyzes them or kills them. Other products do not target adult fleas at all, but instead prevent the flea eggs from hatching, thus breaking the life cycle. [8] A very important part of flea prevention is to persist with the same control measures for as long as possible.
Humans have their own species of fleas, Cohen said, but they can't live long off of people. She said a main determinant if you have fleas are long itchy red bites on the skin.
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Here are 10 animal mothers that die after giving birth. For some species bringing new life into the world also serves as a final act. Here are 10 animal mothers that die after giving birth.
Cat fleas originated in Africa [4] but can now be found globally. [5] As humans began domesticating cats, the prevalence of the cat flea increased and it spread throughout the world. Of the cat fleas, Ctenocephalides felis felis is the most common, although other subspecies do exist, including C. felis strongylus, C. orientis, and C. damarensis ...
The most infamous flea-to-human transmitted disease is the bubonic plague, which was caused by the bacterium Yersinia pestis.