What causes urine leucocyte positivity?

Urinary tract infection can be divided into upper urinary tract infection and lower urinary tract infection. Upper urinary tract infection usually refers to pyelonephritis, and lower urinary tract infection usually refers to inflammation of urinary tract and bladder. More than 95% of urinary tract infections are caused by a single bacterial infection. The pathogenic bacteria are clinically most Escherichia coli. The causes of infection are mainly seen in patients with long indwelling catheters. In addition, female patients because the urethra is relatively close to the vagina, anus, it is easy to cause urinary system infection. In addition, neurogenic bladder, stones, congenital abnormalities, as well as vaginourethral fistula, intestinal fistula, etc., can also cause urinary system infection.