Plague is an infectious disease caused by the bacteria yersinia pestis, usually found in small mammals and their fleas. Welcome to the plague outbreak toolbox key reference documents plague information page (geneva: World health organization;

World health organization; La peste es una enfermedad infecciosa causada por yersinia pestis, una bacteria zoonรณtica que suele encontrarse en pequeรฑos mamรญferos y en las pulgas que los parasitan. La transmisiรณn entre.