Ewha Med J Volume 47(3); 2024 The article “Reporting Guidelines for Community Outbreak Investigation (G-CORE): A Study Protocol” describes the development of standardized reporting guidelines for investigations of infectious disease outbreaks in community settings. The authors highlight that outbreak reports are often inconsistent and lack important epidemiological information, which makes it difficult to compare studies and apply findings to public health practice. The G-CORE project aims to create a structured guideline that improves the quality, transparency, and completeness of outbreak investigation reports. By establishing clear reporting standards, the guideline intends to support researchers and public health professionals in documenting outbreaks more systematically and to facilitate better communication, analysis, and response to infectious disease events.