What are the three forms of plague and how are they contracted?

Plague is defined as the transmission of the bacteria infection and have the poor sanitation. There are basically three types of the plague in the body of human that are:

Septicemic plague Pneumonic plague Bubonic plague

The plague symptoms are developed during the infection in the human body within a week. and they contracted when an infection rodent or bite of the flea take place in the body.