Is it permissible, in Islamic law, not to inform a suitor about hepatitis C and to treat it secretly?

The suitor must be informed about the fiancée's illness, and it is not permissible to conceal it, for the Prophet, peace and blessings be upon him, said: "He who deceives us is not of us." And whoever fears Allah by not deceiving the suitor, Allah will grant her a way out and provide her with what she desires, as Allah the Almighty said: "And whoever fears Allah - He will make for him a way out And will provide for him from where he does not expect. And whoever relies upon Allah - then He is sufficient for him. Indeed, Allah will accomplish His purpose. Allah has already set for everything a [decreed] extent."