There is magic that could do that, yes, but it is not necessary to go to such extremes.
Enchanted crystals could work, even purification rituals. I would have to assess it personally to know what it is.
Why were you speaking about that?
Other options:
no subject
[because, as claire may suspect, it might be forcing someone to absorb said sickness, to their own detriment.]
[but it does give her pause.]