Question to the Department for Transport:

To ask the Secretary of State for Transport, whether there has been a review of the safety of air conditioning systems in commercial aircraft to reduce the risk of those systems spreading covid-19 among passengers.

Air conditioning systems on modern aircraft filter cabin air every few minutes through High Efficiency Particulate Air (HEPA) filters. These filters are very effective at capturing airborne microbes in the filtered air, and when coupled with the drawn in fresh air, can help to mitigate the longer range risk of transmission. A review is being undertaken for the other known routes of transmission.