Why do bacteria attack and invade humans?

Answer 1

Parasitic bacteria invade humans because they cannot survive otherwise. The human body is their natural environment and their metabolic functions can be carried out only by disrupting ours. So they attack and invade humans.

Answer 2

Five places that bacteria are normally found include:

1. the skin - normal skin flora
2. the mouth - contains millions of bacteria - leads to cavities and bad breath
3. the intestines - normal to aid in break-down of food
4. the rectum and in feces - E-Coli is one of the primary bacteria that will always be in feces and in the rectum
5. any object that is frequently handled, which are called "fomites": Definition of fomites is:
   1. objects or materials that are likely to carry infection, such as clothes such as neckties, soles of shoes, utensils, door handles, faucets on sinks, and furniture.
   
   

Any place where bacteria colonize can cause an infection, most commonly in the:

1. nose
2. throat
3. lungs
4. urinary tract - bladder and kidneys
5. intestinal tract - but usually short-lived because bacteria causes diarrhea
6. skin
7. vaginal tract
8. penile-urinary tract

Areas that can acquire a bacterial infection, but more rarely, is in the:

1. brain - must cross the blood-brain barrier
2. the heart

Most other organs do not get bacterial infections, nor do muscles and bones unless there has been a surgical incision or other wound.

Answer 3

Not all bacteria harm us, many of them are very friendly and useful because they help us digest our food. Others, that are harmful, destroy our body tissues.

Answer 4

The bacteria want to live like any other organism but our bodies contain a lot of compound which is may be nutrients for bacteria (((Moustafa Sharamant)))

Answer 5

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