Must a suitor infected with the "B" virus, even if in a small percentage, and whom doctors recommend for treatment with a high recovery rate, inform his fiancée's family immediately, or is it permissible for him to wait until the treatment period ends, taking into consideration that informing them might cause severe anxiety to her family and spread the news throughout the village?

The defects that must be disclosed before marriage, and which establish the right to annulment, are those that prevent sexual intercourse, or repulsive and contagious diseases such as leprosy and elephantiasis. If the disease is contagious, it is obligatory to disclose it to the fiancée. If the doctor has stated that recovery is likely and contagion can be avoided, he may inform her and request discretion. However, if he fears his parents will find out, he may break off the engagement and wait until the effect of the treatment appears. And Allah knows best.