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[Environment Testing Results for Legionellosis in 2021]
Gyehee Lee1, Inho Kim1, Jeongok Cha1
1질병관리청 감염병정책국 감염병관리과.
Jugan Geon-Gang Gwa Jilbyeong
|December 3, 2025
Summary
In 2021, South Korea tested 75.9% of environmental water facilities for Legionella bacteria. Over 16% of tested facilities, including hot springs and hospitals, showed positive results, highlighting the need for improved prevention strategies.
Area of Science:
- Public Health
- Environmental Health
- Infectious Disease Prevention
Background:
- The Korea Disease Control and Prevention Agency (KDCA) manages environmental water facility testing to prevent Legionellosis.
- In 2021, 2,731 out of 3,956 planned facilities (75.9%) were tested nationwide.

