Bubonic Plague and Cat Scratch disease can be carried by fleas.
Possibly, they can carry various diseases
Fleas can transmit diseases to humans, such as typhus and plague, which can be lethal if not treated promptly. While fleas themselves are not typically lethal, the diseases they carry can pose a serious threat to human health.
Fleas can transmit heart worm, tapeworm, etc. to your animals. Fleas are tiny, but they sure can pass things on to your animal that you wouldn't want. The best thing you can do is always keep up on the flea treatment and preventatives.
Fleas don't carry chlamydia.
Plaque
the sucking of blood and giving of diseases
Moles? Any type of animal carries diseases. Moles carries different types of diseases though. But, they wont carry diseases like H1N1 disease.
I really want a pet hedgehog, but my mom won't let me because they carry diseases. I want to know if there is a kind of hedgehog that does not carry any diseases at all. Is there one?
Yes, fleas can infest raccoons.
No.
No, Ferrets do not carry any diseases, but they are subject to be infected with various illnesses from humans, cats, and dogs.
It depends on the parasite and if they carry a diseases. Mosquitoes can carry malaria, yellow fever, Zika all which have high death rates, especially malaria. Fleas can carry the plague (black death) which killed hundreds of thousands.