Types of the black death...please help?

there are 3
pneumonic
bubonic
and septicemia

are all 3 transmitted through air? if not than how?
how are they each transmitted? are all 3 carried by fleas on rodents?

All 3 can be transmitted through air. All 3 are carried by fleas and rodents.
The Bubonic Plague is the big category and Pneumonic and Septicemic are sub-divisions.

http://en.wikipedia.org/wiki/Bubonic_pla...
http://en.wikipedia.org/wiki/Black_Death

Just so you know septicemia is caused by more than the bubonic plague:

septicemia (sep鈥瞭is膿鈥瞞膿蓹)
n
Systemic (bodywide) illness with toxicity due to invasion of the bloodstream by virulent bacteria coming from a local seat of infection. The symptoms of chills, fever and exhaustion are caused by the bacteria and substances they produce. The disorder is treated with massive doses of antibiotics. Also known as blood poisoning.

Tags

　　Sexually Transmitted Diseases 　　Sexual Health 　　Sexual Assault 　　Sewage 　　Severe Combined Immunodeficiency 　　Severe Acute Respiratory Syndrome 　　Septicemia 　　Septic Systems 　　Sepsis 　　Senility 　　Semen 　　Selenium 　　Seizures

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