A patient who is infected with diseases that have no cure, it is a higher risk that it will spread to others. I think it's necessary to use euthanasia to inhibit infection.
The patients infected with the plague that has no cure, there is a high risk that it will spread to others. I think it's absolutely essential to use euthanasia to prevent infection.
The patient was contaminated with no therapy are at high risk to spread to others. I think it is absolutely to must use the euthanasia to prevent infections.