The Human Flea is the common name for Pulex Irritans. It is found all over the globe and not specific to any one place. The human flea feeds off the blood of its host and not necessarily always a human being. This specie of parasite is also known to feed off the blood of other mammals such as pigs (most commonly), rodents and badgers. The dog and cat flea are probably more likely to be found in your home (if you have pets) rather than the human flea, unless perhaps you’re a pig farmer.
The human flea is a very small wingless parasite. The adults grow up to almost 4 mm in length and are dark brown. They are hard and resilient insects which have adapted tube like mouths that allow them to pierce the skin and suck blood. Like the dog and cat flea, they have a similar lifecycle (egg, larvae, pupae, adult). The adults can jump 150 x their body length and 80 x their height making it easy to move from one host to another. A female can produce up to 950 eggs if left to reproduce and multiply.
This parasite may be small, but it is able to carry serious diseases from one person to another (and from infected mammals to humans) as well as cause allergic reactions to many. The human flea can spread typhus and tapeworm. Although it wasn’t directly responsible for transmitting the bubonic plague from one to another, it could also carry the disease!