The reason for that actually makes sense. It’s rarely clear how and when someone contracted a prion disease at time of diagnosis, and often it is unclear which specific prion disease a person has. While it may seem that a father contracted a prion disease after you were born, it could also be that the father has an inheritable prion disease that you too may have inherited.
The blood relative thing is kind of silly, it should be mothers only but it also bans you if your father contracted it after you were born.
The reason for that actually makes sense. It’s rarely clear how and when someone contracted a prion disease at time of diagnosis, and often it is unclear which specific prion disease a person has. While it may seem that a father contracted a prion disease after you were born, it could also be that the father has an inheritable prion disease that you too may have inherited.