A surface protease helps Yersinia pestis plow its way through the body during pneumonic plague. During the 14th through 16th centuries, Y. pestis caused a pandemic of plague that killed a third of ...

A cat in Oregon has been ... weakness and muscle aches. Bubonic plague can lead to severe illness in most people, with a 60% fatality rate if left untreated. Pneumonic plague is much more serious ...