Lice and fleas are tiny insects that live on your body and feed on blood. But there are key differences between them. Lice are tiny insects that live and grow on human hair, feeding on your blood.

One of the worst pandemics in human history, the Black Death, along with a string of plague outbreaks that occurred during the 14th to 19th centuries, was spread by human fleas and body lice, a new ...

A fluorescent image of a human body louse with Yersinia pestis infection — that's the cause of the plague — depicted in orange/red in the glands. The plague — which in the mid-14th century was also ...

A check mark. It indicates that the relevant content has been reviewed and verified by an expert Our stories are reviewed by medical professionals to ensure you get the most accurate and useful ...

A new laboratory study suggests that human body lice are more efficient at transmitting Yersinia pestis, the bacterium that causes plague, than previously thought, supporting the possibility that they ...

We don’t always have the answers, but we have some people on speed dial who do — which is why we present to you our FYI series where we have experts explain if lip balm is actually bad, how often you ...

It’s no secret that pets are prone to flea infestations that can often be difficult to control. When dogs and cats are covered in these parasites, they also take up residence in pet owners’ homes. But ...

The plague — which in the mid-14th century was also known as the Black Death — devastated swaths of Europe, killing millions in under a decade. One of the puzzles surrounding this ancient pandemic was ...

Fluorescent image of a human body louse with Yersinia pestis infection (orange/red) in the Pawlowsky glands. Y. pestis has been the culprit behind numerous pandemics, including the Black Death of the ...