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Fleas feed on a wide variety of warm-blooded vertebrates including dogs, cats, rabbits, squirrels, ferrets, rats, mice, birds, and sometimes humans. Fleas normally specialise in one host species or group of species, but can often feed but not reproduce on other species. Ceratophyllus gallinae affects poultry as well as wild birds. [29]
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 ]
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.
The CDC explains that fleas feed on human or animal blood — they're tiny insects that can cause big-time irritation, though their bites are generally not life-threatening (rarely, the CDC ...
The most infamous flea-to-human transmitted disease is the bubonic plague, which was caused by the bacterium Yersinia pestis. The plague, fevers, tularemia: The diseases fleas can carry and how to ...
Problems caused by fleas may range from mild to severe itching and discomfort to skin problems and infections. Anemia may also result from flea bites in extreme circumstances. Furthermore, fleas can transmit tapeworms and diseases to pets. When fleas bite humans, they may develop an itching rash with small bumps that may bleed.
Northern rat fleas are external parasites, living by hematophagy off the blood of rodents. N. fasciatus can bite humans, but they are more common parasites of rodents. [1] Since they are associated with humans, they are common disease vectors that can spread from animals to humans. Diseases that can be spread through fleas include the plague ...
As with other fleas, the life cycle consists of eggs, the larval stages, a pupal stage and an adult stage. [7] The larvae have chewing jaws and it is only the adult fleas that are capable of biting the host. Under optimal conditions of temperature and humidity, adults can emerge from the cocoon in 23 days.