What are the most common pathogens of urinary tract infections in children

The most common cause of urinary tract infection in children is Escherichia coli,

which accounts for more than 80% of all pathogens. Escherichia coli is a normal flora in the intestinal tract. When the human immunity drops, urinary tract obstruction, iatrogenic operation, Escherichia coli can infect the urinary tract retrograde through the urethral orifice, causing cystitis, urethritis, and even pyelonephritis. In addition to Escherichia coli, urinary tract infections in children can also be caused by other bacteria, such as Proteus, Klebsiella, Bacillus aerogenes, Pseudomonas aeruginosa, etc.