While many of his attempts to subjugate human kind have been thwarted, he has yet to have been killed, and thus remains a significant threat regarding his namesake.
For those of you who have not read this magnificent graphic novel by Alan Moore, I'll not spoil the ending. But the Communists are a Top 6 Doomsday Threat for some reason.... *wink*
Also called: Bubonic plague, Pneumonic plague
Plague is an infection caused by the bacterium Yersinia pestis. The bacteria are found mainly in rats and in the fleas that feed on them. People and other animals can get plague from rat or flea bites. Historically, plague destroyed entire civilizations. In the 1300s, the "Black Death," as it was called, killed approximately one-third of Europe's population. Today plague is uncommon. This is largely due to better living conditions and antibiotics.
There are three forms of plague:
Bubonic, which causes the tonsils, adenoids, spleen and thymus to become inflamed. Symptoms include fever, aches, chills and tender lymph glands
Septicemic, in which bacteria multiply in the blood. It causes fever, chills, shock and bleeding under the skin or other organs
Pneumonic, in which the bacteria enter the lungs and cause pneumonia. People with the infection can spread this form to others. This type could be a bioterror agent
Treatment for plague is a strong antibiotic. There is no vaccine for plague.