Microbiology Which one of the following gram-positive organism is the most common cause of UTI among sexually active women- A Staphylococcus epidermidis B Staphylococcus aureus C Staphylococcus saprophyticus D Enterococcus 💡 Explanation Which one of the following gram-positive organism is the most common cause of UTI among sexually active women- ✓ Correct Answer: C. Staphylococcus saprophyticus