Hygiene research has evolved from classical observational methods to highly integrated digital, molecular, and environmental monitoring approaches. This review analyzes contemporary methods used to study hygiene in public health, clinical settings, occupational environments, and communities. A structured narrative review was conducted using recent literature on environmental sensing, microbiological surveillance, molecular diagnostics, wearable technologies, and data analytics. Findings indicate that modern hygiene research increasingly relies on real-time monitoring, high-throughput laboratory techniques, geospatial analysis, and machine learning to identify contamination sources, evaluate hygiene behaviors, and predict health risks. These methods provide greater sensitivity, temporal resolution, and scalability than traditional approaches. However, they also introduce challenges related to data quality, privacy, cost, and standardization. The review concludes that the future of hygiene research lies in multidisciplinary integration of environmental science, microbiology, epidemiology, and digital health technologies.
Makhliyo Abdulhamid kizi Israilova (Mon,) studied this question.