The first case of the 2015 Korean Middle East Respiratory Syndrome outbreak

Area of Science:

• Epidemiology
• Infectious Disease Control
• Public Health Policy

Background:

• The 2015 Middle East Respiratory Syndrome (MERS) outbreak in South Korea highlighted significant challenges in controlling novel infectious diseases of foreign origin.
• Effective prevention and management strategies are crucial to mitigate the impact of emerging infectious threats.

Purpose of the Study:

• To analyze the epidemiological and clinical aspects of the MERS outbreak initiated by a single patient in Korea in 2015.
• To identify problems in current outbreak prevention and spread control measures.
• To inform policy development for managing future outbreaks of novel infectious diseases.

Main Methods:

• In-depth epidemiological investigation of the index MERS patient.
• Personal and phone interviews with the patient and guardians.
• Collaboration with the Saudi Arabian Ministry of Health to trace overseas activities.
• Review of clinical records and test results.
• Utilized advanced tracking methods like CCTV and GPS, and insurance records for contact tracing.

Main Results:

• The index patient visited 4 healthcare facilities and had contact with 742 individuals between symptom onset and hospital admission.
• A total of 28 secondary MERS infections were identified among those who had contact with the patient.
• The study identified deficiencies in early contact identification and existing preventive techniques.

Conclusions:

• Enhanced epidemiological knowledge of MERS transmission and clinical presentation is vital.
• Improved investigative methods, including technology-assisted tracing, are necessary for effective contact identification.
• Revisions are needed in national and hospital-level infectious disease management systems, including quarantine protocols and hospital environments, to better prepare for future outbreaks.