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 ...

There are more than 2,000 species of tiny (0.04 to 0.15 inches), wingless, blood-sucking fleas that live on the body of the host they infest. Although fleas cannot fly, they have developed powerful ...

A home in the Central Highlands of Madagascar. Residential structures vary greatly in rural areas, although homes typically consist of more than one level, with livestock often kept overnight in the ...

Summer heat, check. Mosquitoes, check. Labor Day traffic, check. Now add fleas carrying typhus fever to things Southern Californians have to worry about this weekend. A report from the Los Angeles ...

Fleas are a year-round problem in the South, both indoors and out. “They’re carried into your yard by wildlife such as squirrels, raccoons, opossums, mice, and deer,” says Eric Benson, PhD, professor ...