Abstract
Middle East respiratory syndrome (MERS) has been imported into various countries since the initial detection in 2012. The annual Hajj pilgrimage to Saudi Arabia, in which millions participate could increase the risk of MERS transmission. Accordingly, in 2024, the Korea Disease Control and Prevention Agency (KDCA) established a response system to prevent potential MERS introduction during the Hajj period. This study summarizes the KDCA’s MERS prevention measures, focusing on screening and surveillance activities conducted from June 20 to July 9, 2024, before and after the arrival of pilgrims, respectively. Out of 90 pilgrims, 3 exhibited fever and respiratory symptoms upon entry and were classified as suspected MERS cases. Test results confirmed negative outcomes for both MERS and coronavirus disease 2019, with two individuals testing positive for rhinovirus and one for influenza A. Additionally, 22 suspected MERS cases were reported in the community level, all of whom tested negative for MERS. The KDCA will continue to strengthen its surveillance system for pilgrims traveling to Saudi Arabia during the Hajj pilgrimage. This report provides an overview of the enhanced measures and outcomes during the 2024 Hajj pilgrimage, emphasizing the importance of continued vigilance and effective response systems to reduce the potential risk of MERS introduction due to the large-scale gatherings, such as the Hajj pilgrimage.