Complex sentence: In children bacteria are the cause in about 15% of cases with the most common types being: "Salmonella", "Shigella", "Escherichia coli", and "Campylobacter".
Split into simpler sentences: In children bacteria are the cause of about 15% of cases. The most common types are: "Salmonella", "Shigella", "Escherichia coli", and "Campylobacter".