Question: What is a primary measure in preventing the transmission of Chlamydia trachomatis, the causative agent of trachoma? What is a primary measure in preventing the transmission of Chlamydia trachomatis, the causative agent of trachoma? Conducting regular eye examinations Implementing improved sanitation and hygiene practices Taking antifungal drugs prophylactically Administering antiviral medications Wearing sunglasses to protect the eyes from sunlight