THE BLACK DEATH.

http://www.discovery.com/stories/history/blackdeath/blackdeath.html

Excellent and interesting site with good graphics and information.

http://www.byu.edu/ipt/projects/middleages/LifeTimes/Blackdeath1.html

Lots of detailed information here.

http://www.millennium-debate.org/tel27au.htm

Read about a vaccine for Humans against the Black Death

http://homes.jcu.edu.au/~hipgt/medieval/black.htm

Good information

http://mars.wnec.edu/~grempel/courses/wc1/lectures/27blackdeath.html

Read the information and email the professor with your own thoughts.

http://www.insecta-inspecta.com/fleas/bdeath/

Some gruesome pictures in this well organised site.