There is no doubt in my mind that Covid 19 spreads between people In the same air space, we now have 3 government officials infected, they were probably not infected by aerosol and they would have been infecting others before they had symptoms. Social distancing helps slow spread but we are all going to get infected, how much virus we come into contact with will affect our immune reaction, many will have mild symptoms or none at all and some will be infectious carriers. Aircraft should not be recirculating air at all removing most of the risk, but it’s very difficult to achieve the same risk limitation in terminal buildings and transit systems.
If the lockdown lasts 6 months that is now being projected there are going to be a lot of bankruptcies, not only in the airline industry, lack of cash flow is a killer, bills are not being paid now, most of the government help is loans. There will be no cash to repay them, in any case there is no collateral to secure them in many cases - this is going to get very messy for everyone. How much collateral has a company like BA actually got, most assets are leased or rented, what do they own outright?.