ArticleBody:Blood-sucking, parasitic human body lice may be more effective at transmitting the bacterium that causes bubonic plague than scientists originally thought. A laboratory study published May 21 in the journal PLOS Biology found that lice may have spread Yersinia pestis efficiently and contributed to past pandemics the way that fleas do. Y. pestis has been the bacterium responsible for numerous pandemics, most notably the Black Death.
These feeders simulate warm human skin, so the scientists could study transmission potential in a laboratory setting. The body lice that became infected with Y. pestis and were capable of routinely transmitting it after they ate blood containing levels of the pathogen that are similar to those found in actual human plague cases. The team also found that Y. pestis can infect the lice’s Pawlowsky glands.
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