Sentences with phrase «called rickettsias»

Typhus, a disease caused by bacteria called rickettsias, has been blamed for numerous military debacles, the earliest in 1489 when it killed 17,000 soldiers in a war over Granada between the Moors and the Spanish army of Ferdinand and Isabella.

Rocky Mountain spotted fever, also spread by contact with ticks, is caused by a different kind of bacteria called a rickettsia, which is rod - shaped and multiplies only within the cells of its host.