Photo: Rat Receiving Station set up as part of the War on Rats led by the U.S. Public Health Service. Millions of rats were killed and in 2 months no new cases of plague were reported. Bubonic ...

Plague is an infection caused by the Yersinia pestis bacteria. The zoonotic microorganism is typically found in small mammals and their fleas. The disease isn't something of the past as it has not ...