Can normal flora of the kidney cause urinary tract infections? Your answer is \'yes\'. Explanation: Normal flora of kidney includes those micro-organisms which are an essential part of kidney. Our body contains certain micro-organisms (bacteria) which aid in digestion and maintain immunity of our body. These bacteria are found mainly in the gut, nasal opening, ear canal and urinary tract. Some bacteria are however found in internal organs like kidney, heart, and liver. Kidney constitutes the upper urino-genital tract. The micro-flora of lower urinary tract (urethra and vagina) includes Staphylococcus, E.coli, Neisseria, Streptococcus and Lactobacillus. These may transcend to the Upper urinary tract i.e. kidney in small amount and constitute the normal microflora of the kidney. If a person is infected from an opportunistic infection, or is having a immunity related disease like AIDS, then, this person will not be able to maintain normal microflora. These bacteria which constitute \'normal\' grow unlimitedly and cause infection in the body. Please note that if left untreated, then these may cause severe diseases. Solution Can normal flora of the kidney cause urinary tract infections? Your answer is \'yes\'. Explanation: Normal flora of kidney includes those micro-organisms which are an essential part of kidney. Our body contains certain micro-organisms (bacteria) which aid in digestion and maintain immunity of our body. These bacteria are found mainly in the gut, nasal opening, ear canal and urinary tract. Some bacteria are however found in internal organs like kidney, heart, and liver. Kidney constitutes the upper urino-genital tract. The micro-flora of lower urinary tract (urethra and vagina) includes Staphylococcus, E.coli, Neisseria, Streptococcus and Lactobacillus. These may transcend to the Upper urinary tract i.e. kidney in small amount and constitute the normal microflora of the kidney. If a person is infected from an opportunistic infection, or is having a immunity related disease like AIDS, then, this person will not be able to maintain normal microflora. These bacteria which constitute \'normal\' grow unlimitedly and cause infection in the body. Please note that if left untreated, then these may cause severe diseases..