Now more than ever, the quality of indoor air is an important consideration of any HVAC system. Proper ventilation can help reduce the spread of germs by adequately supplying fresh outdoor air into a work environment.
According to the Occupational Safety and Health Administration (OSHA), the most common factors affecting indoor air quality are poor ventilation, temperature control, high or low humidity, recent remodeling, and other activities in or near a building that can affect the fresh air coming into the building.
For more information on how to achieve the proper indoor air quality, OSHA has valuable online resources available here.