Is it permissible for a woman to seek divorce from her husband after discovering he is infected with the Hepatitis C virus, and learning that he concealed this matter from her before marriage?

It is advisable to frankly tell the husband about the fear of his contagious illness and to request medical reports. If the husband recovers and there is no longer a danger, then it is not permissible to request separation. If it is confirmed that he has a contagious disease, the wife has the right to request separation or khul' (divorce initiated by the wife) if she cannot ascertain his condition and is suspicious.