How was bubonic plague passed on?

Is alcoholism a illness or a weakness? Is a fingerlike projection in the lining of the small intestine? Do all people with spina bifida wear braces? What is the dentsl hygienist? What two things are absorbed in the large intestine? How does hunger affect your brain? What causes green cerebral spinal fluid? Why Is Douching? Are there fast twitch muscles in your legs? Is selena gomez sexually active? When are you considered morbidly obese? What std causes people to suffer from an outbreak of blisters and ulcers follwed by another outbreak in weeks or months? What is color deficiency? Can inhaling air freshener make you have a miscarriage? Who has the largest bust? Is 38.2 high for a toddler? Could you be pregnant if your cervix is close soft and high AF is 3 days late? Can hydrocortisone cream 2.5 be used for jock itch? I have braces and needed to get a bite plate for my overbite when i had my bite plate put on? What are the formation of the endochondral bone?