Researchers thought the bacterium would infect fleas on rats, and when the rats died, the fleas would jump to humans, infecting them. Rats are also thought to be responsible for spreading more recent ...

Madagascar is one of the last places where outbreaks of human bubonic plague still happen regularly. Fleas carrying the plague bacterium Yersinia pestis can spread the disease through their bites.

Most people associate flea bites with pets or animals, but they can live on humans too, regardless of whether or not you have pets. Here's how to treat flea bites and eliminate these pesky pests ...

No pier or fairground was complete without a tent into which spectators would be ushered to watch human fleas perform their feats, accompanied by the rapid patter of a ‘professor’, as all flea ...

Siphonaptera (fleas) are a group of wingless insects that feed on blood. Fleas typically attack dogs and cats, but humans can also get bites. Flea bites may occur on your ankles, legs, waist ...

PFAS (per-and polyfluoroalkyl substances) are often referred to as “forever chemicals” because they don’t break down and can accumulate in humans. They are associated with a variety of ailments, ...