Mostly, I do agree. I think the information given on the other thread about leaving it clear once your current birds are gone for a period of time can be helpful. Don't add more before they pass if you wanna get rid of whatever it was completely for sure. And don't bring home any sneezing birds even for quarantine. Was it you that's in Italy? Do y'all have hatcheries you can get birds from?i cant disinfect all the ground do you agree with this?
Also don't do things to invite other wild birds or animals to your place, extra. They still come here for all the flowers, bugs, and other natural goodies around here. But no feeders filled with nuts and seeds.
Also removing waste and not having bare ground can go a long ways towards keeping bacterial and parasitic loads in check.
Sometimes a sneeze is just a sneeze like during dirt bathing. Your most recent loss would surprise me if it wasn't age related in large part at 6 years old, she had a good run for a high production breed.