The Black Death, also
known as the bubonic plague, wiped out about one-third of Europe's population
during the Late Middle Ages. It is a bacterial disease caused by Yersinia
pestis, which is a type of bacteria carried by rats. Fleas
transferred the bacteria from rats to humans, by contracting the bacteria and
then biting humans.
Symptoms include
flu-like symptoms such as:
- Fever
- Headache
- Chills
- Weakness
The main symptom was the
"buboes" which were swollen, tender lymph nodes.
http://www.medicinenet.com/script/main/art.asp?articlekey=141316#bubonic
http://upload.wikimedia.org/wikipedia/commons/f/f3/Symptoms_of_bubonic_plague.svg
http://www.skinsight.com/images/dx/webAtlas/bubonicPlague_45241_lg.jpg
http://www.cdc.gov/plague/faq/#risk
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