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Hace 3 horas · The fleas aren’t picky, so when their “rat hosts are unavailable, they will feed on other small animals — as well as humans.” “The rat fleas aren’t gonna start biting humans until all of their preferred hosts — the rats — are gone,” says Abigail Agresta , a medieval historian at George Washington University.
Hace 3 horas · 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 how it spread so quickly. The common wisdom is that rat fleas were the big spreaders. But now a new paper is making a second parasite look ...
Hace 3 horas · Infectious Disease. Don't just blame rat fleas. Lice may have helped spread 'black death' plague. A fluorescent image of a human body louse with Yersinia pestis infection — that's the cause of ...
