Introduction The COVID-19 pandemic has shaken the world since December 2019. Malaysia was not spared from this unprecedented crisis. The Malaysian government had declared Enhanced Movement Control Order (EMCO) in breaking the chain of COVID-19 transmissions in red zone areas in Hulu Langat, Selangor. For the EMCO, Hulu Langat District Health Office (PKDHL) had been responsible to provide the public health responses and measures in the area under the purview of Selangor State Health Department. The Hulu Langat District Health Officer who is a public health specialist led the taskforce for the planning, monitoring and implementing the public health activities while providing the medical services to the people. In this study, we aimed to identify the epidemiological characteristics of COVID-19 in Kampung Sungai Lui, Hulu Langat and the role of EMCO as a chain breaker for COVID-19. Methods A retrospective cross-sectional study was done from March 30, 2020, until May 5, 2020, in the EMCO area in Kampung Sungai Lui, Hulu Langat. This study site was purposely selected due to a sudden surge of positive cases in the area that requires fast and critical public health measures. We collected primary data through Active Case Detection (ACD) and Passive Case Detection (PCD) and the 1,989 population was screened. The epidemiological characteristics and clinical manifestations were analysed using Microsoft Excel 2018 Software. Results [Refer to Poster]. Conclusion A responsive public health measures with comprehensive early detection and adherence of Standard Operating Procedure (SOP) play a pivotal role in breaking the transmission chain of fast-spreading COVID-19 clusters. Epidemiological characterisation of COVID-19 confirmed cases, provides the basis in the development of effective control strategies.