There is currently (at time of posting 04.03.20) no evidence that Coronavirus (COVID-19) is airborne, the virus appears to spread via droplets and direct contact with contaminated surfaces and objects.
However, as with any air conditioning system, the design and maintenance is key to its performance and the health/wellbeing of the building occupants.
Research suggests that increased humidification has a large impact on reducing the transmission of some airborne virus, as will the level of filtration within a ventilation system.
We would recommend that the air space is supplied with clean air or suitably diluted with fresh clean air, and that any installed air handling/conditioning system be regularly maintained.
If you have any concerns or questions regarding your system, please get in touch.