Assessment of the risk of infectious aerosols leaking to the environment from BSL-3 laboratory HEPA air filtration systems using model bacterial aerosols

- Filtration efficiency of HEPA filter air purification system of BSL-3 lab was assessed.
- The purification system was found effective against bacterial aerosol leakage.
- The aerosol test method adopted was capable of evaluating HEPA filter air purification system.