Body lice may be bigger plague spreaders than previously thought
Fluorescent image of a human body louse with Yersinia pestis infection (orange/red) in the Pawlowsky glands. Credit: David M. Bland (CC0, creativecommons.org/publicdomain/zero/1.0/) 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 may have contributed to