e. coli its normal flora.
Normal flora is present throughout the body and on all areas of the skin. Every body orifice (opening) contains normal flora: the mouth, ears, vagina, and rectum. E-Coli exists in the intestines. The skin contains a variety of flora that can turn into pathogens under the right conditions.
E. coli is part of the normal flora in the intestines and is secreted with faeces. It may enter water by faecal contamination of the water supply.
Yes, usual flora, normal flora, and typical flora are all normal results.
Gram-negative rods, mostly E. coli, are the most prevalent bacteria in our guts. Most E. coli are normal flora, only a few strains are pathogenic. Lactobacilli, which are gram-positive rods, are also in our guts.
Another term for normal flora is indigenous microbiota or resident flora.
Several species of bacteria are abundant in the human colon for aid in digestion. One of the common species is E. coli.
Normal flora exists on and in the body. But certain normal flora lives only in certain body areas. For example, we have E-Coli microorganisms in the large intestines, rectum, and on the skin around the anus. If that flora is "moved" to a different body area, say in the mouth (from not washing hands after wiping away a bowel movement) or in the vagina (from wiping back to front), then infection can occur. Some diseases make normal flora multiply. For example, yeast is found on the skin, mouth, and in the vagina. People with diabetes can have frequent yeast infections in the mouth, vagina, and in skin folds.
You said that in your answer too. As the flora is normal, there is no harm
Normal flora cannot cause a "disease". But if normal flora is disrupted it can become a pathogen and then cause infection. Some diseases, like diabetes, can disrupt normal flora and cause infection, especially yeast infections on the skin or in the vagina of women.
E. coli are part of the normal flora of the gut. Meaning that they have a home there. They make vitamin K. They also prevent pathogenic bacteria from establishing themselves in the gut. They make it hard for them to get started.
If human skin and the body had no flora and was, essentially, a "sterile environment" without any microorganisms, then every time contact was made with a micro-organism the body could become ill. The normal flora allows the body to recognize microorganisms on objects we touch, hands we shake, germs we come into contact with, but permits our bodies to not react to every germ as an attack. Without normal flora, our bodies would be susceptible to every germ, leading to frequent and repeated infection. Also, in some cases, normal flora helps the body carry on normal functions. For example, E-Coli helps process what we've eaten and helps in the formation of stool (bowel movement).