To all of us aviators it must be self evident that the Wuh Flu didn't arrive in Europe on a springless donkey cart but aboard airplanes.
Irrespective of masks, gloves, goggles, face shields, sanitizers, hepa filters, cabin fogging - Aviation remains as the ultimate global superspreader. How else could the new mutant UK strain wind up in USA? How else could the new South African Covid strain wind up in the European Union?
Let's face it: Until the global community has been vaccinated and has a grip on the proliferation of the Covid virus, international air travel must be suspended.
Cargo crews must remain under escort and in isolation at out stations. It's practical reality.