Sexually transmitted infections (STIs) are among the most common communicable conditions and affect the health and lives of people worldwide. More than 30 pathogens can be transmitted sexually, and individuals may have multiple infections at the same time. Individuals who are infected with an STI may not be aware of their infection but can transmit the infection to others and may go on to develop long term and potentially fatal outcomes including cancer, chronic pelvic pain, ectopic ... MPSC STI Recruitment 2025: Know more about the application process and fee, cut-off, admit card, result, syllabus and exam pattern, score card, answer key, FAQs here Suggested citation:National Technical Guidelines on Sexually Transmitted Infections and Reproductive Tract Infections (2024). National AIDS Control Organization, Ministry of Health and Family Welfare, Government of India. For additional Information about National Technical Guidelines on Sexually Transmitted Infections and Reproductive Tract Infections (2024), Please contact: STI Division, National AIDS Control Organisation (NACO), Ministry of Health and Family Welfare, Government of India ... Overview Sexually transmitted diseases (STDs ) are caused by sexually transmitted infections (STIs). They are spread mainly by sexual contact. STIs are caused by bacteria, viruses or parasites. A sexually transmitted infection may pass from person to person in blood, semen, or vaginal and other bodily fluids.