Background: Although HIV prevalence in the general population of Mongolia remains low (<0.1%), infections are concentrated among key populations, particularly men who have sex with men (MSM) and transgender women (TGW). Regular monitoring of infection prevalence and associated risk behaviors is essential for early detection of epidemiological changes and timely response. Aim: To determine the prevalence of HIV and syphilis, assess levels of risk behaviors, and monitor trends among key populations. Materials and Methods: A simplified cross-sectional behavioral and biological surveillance survey was conducted in 2025, integrated with community center-based services in Ulaanbaatar and Darkhan. Non-probability sampling methods (venue-based, community center-based, online, and snowball sampling) were applied. HIV and syphilis infections were screened using rapid diagnostic tests, with confirmatory testing performed. Results: HIV prevalence was 0% among female sex workers (FSW), 6.1% among MSM, and 4.8% among TGW. Syphilis prevalence was 5.5% among FSW (decreasing trend), 12.6% among MSM (increasing trend), and 17.5% among TGW (highest). Coverage of community center-based prevention programs was 15.3% among FSW, 33.1% among MSM, and 64.6% among TGW, while condom use remained below 80% across all groups. Conclusion Although HIV prevalence in the general population remains low, concentrated transmission persists among MSM and TGW at approximately 5–6%. High levels of risk behaviors and insufficient coverage of prevention services indicate continued transmission risk. It is necessary to introduce pre-exposure prophylaxis (PrEP), strengthen STI prevention measures, and expand program coverage.

Background: Accreditation of healthcare institutions serves as a fundamental mechanism for ensuring patient safety and validating the quality of medical services provided to the population. At Intermed Hospital, a quality measurement system for healthcare services has been established since 2015, encompassing 126 quality indicators at both institutional and departmental levels. This system facilitates continuous quality improvement efforts. In this context, quality indicators specific to the endoscopy department play a pivotal role in objectively assessing the quality of endoscopic services. Aim: To assess the quality indicators in gastrointestinal endoscopy unit. Materials and Methods: A retrospective single-center study was conducted by collecting data from the Intermed hospital’s electronic information systems which included HIS and PACS and Quality and Safety Department’s Database and the results were processed using the SPSS software. Ethical approval was granted by the Intermed hospital’s Scientific research committee. The quality of endoscopic services in the Intermed hospital was assessed based on: a) the average values of four quality indicators measured monthly; b) sample survey data from five categories of quality indicators. Results : Between 2016 and 2024, the quality indicators of the endoscopy unit measured as the level of early warning score evaluations for patients was 95.97%±3.33, the level of cases where peripheral blood oxygen saturation decreased during sedation was 1.54%±3.78, the level of cases where patients experienced paradoxiical response during sedation was 5.82%±1.75, surveillance culturing level for validation of endoscopy reprocessing was 11.6%. The endoscopic documentation quality by peer review showed 95.7-100%, the colonoscopy quality indicators were followings as adenoma detection rate: 24.5% Cecal intubation rate: 99.1%, 95.2%, Colonoscope withdrawal average time: 13.28±10.62 minutes, Bowel preparation quality (Boston Scale): 89.3% 95.7%), patient discharge from the recovery room, Average discharge time post-procedure: With propofol alone: 30.92 minutes; With propofol and fentanyl combined: 31.52 minutes, The intermediate risk was 0.28% by the TROOPS evaluation during procedural sedation. Conclusion The quality benchmark levels for these endoscopic units, as determined by a single-center study, can be effectively implemented by benchmark endoscopy centers to enhance their quality and safety operations.