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  • It is important to recognize that if administrative strategies and work practices are inadequate, environmental strategies will not eliminate the transmission risk.
  • They are based on mechanical or natural ventilation, and may be supplemented with filters (high efficiency), and Ultraviolet Germicidal Irradiation (UVGI).
  • Although many environmental strategies are technologically complex and expensive, controlled natural ventilation can reduce the risk of spreading M. tuberculosis.
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