Air filtration is more important in health care facilities than anywhere else, where the level of infectious pollutants in the air increases correspondingly as the density of infected people increases. At the same time, we are not only concerned about hospitals, but many outbreaks of infectious pollutants also appear in outpatient departments. In addition, the accumulation of patients increases the chance of transmission of pollutants, and other health care institutions also need to control air quality, such as nursing homes, dental or outpatient clinics, and so on.
Many authoritative departments have developed guidelines for air filtration levels in health care settings, which have been validated and approved by the following departments: the US Department of Health, the American Institute of Heating, Refrigeration and Air Conditioning Engineers, and the Centers for Disease Control and Prevention.
When air filters form part of a comprehensive air quality control program, they have a huge effect on the protection of airborne diseases in health care facilities. The air filter, filter box or frame ensures air-conditioning space ventilation, temperature and humidity control, fresh air inflow and proper control of air flow, protecting patients from inappropriate contact. For example, patients in burn wards need special consideration for their protection.
Employee protection in health care settings is also extremely important. Both clinical staff and logistics staff are affected by patient contact. The application of appropriate air filtration can reduce the risk by orders of magnitude.