Mitigating Tuberculosis Transmission with Far UV
Tuberculosis (TB) remains a global health threat, causing over 1.4 million deaths in 2015. While TB is curable and preventable, it poses significant challenges due to airborne transmission. To address this, Far UV emerges as a safe, evidence-based, and cost-effective solution, especially when natural or mechanical ventilation is insufficient.
Introduction
Far UV, also known as (222nm ultraviolet germicidal irradiation), offers a vital layer of protection against TB transmission, complementing comprehensive TB prevention programs. This guide focuses on implementing GUV in healthcare facilities, given the heightened risk of transmission in such environments.
Why GUV for TB Control?
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Safe and Effective: Far UV is a safe technology that effectively disinfects air and surfaces without using harmful chemicals. It's crucial for preventing TB exposure, aligning with the "Search-Treat-Prevent" approach.
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Versatile Application: GUV is suitable for various settings, including outpatient facilities, clinics, schools, gyms, hospitals, laboratories, airports, and prisons, providing protection where TB transmission is likely.
Implementation Checklist:
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Source Reliable Equipment: Procure Far UV krypton-chloride lamps and fixtures from reputable manufacturers.
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Strategic Placement: Install Far UV in rooms with inadequate ventilation, prioritizing spaces without air from an external source. Place fixtures in areas with optimal coverage.
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Staff Training: Train all facility staff on Far UV maintenance, emphasizing quarterly cleaning and effectiveness measurement.
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Visibility and Awareness: Post signs indicating Far UV presence to inform occupants, contributing to overall awareness.
Common Fixture Types:
- Rectangular louvered ceiling or wall-mounted fixture
- Round louvered ceiling-mounted fixture
- Louverless wall-mounted fixture with parabolic reflector for high ceilings
- Upwards-facing wall-mounted fixture for high ceilings
Safety Considerations:
Far UV exposure is not harmful to humans or animals. Focusing on well-ventilated areas where it poses no risk of ozone build up is important. Far UV wavelength cannot penetrate the outer skin layer therefore there is no evidence that it can cause cancer.
Conclusion
Mitigating TB transmission demands a multifaceted approach, and Far UV emerges as a valuable tool within the Search-Treat-Prevent framework. As part of a comprehensive strategy, Far UV helps protect against TB exposure, contributing to global efforts to eliminate this infectious disease.
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