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What is the Islamic ruling on marrying someone who has hepatitis B, knowing that this disease is transmitted sexually and through the blood, and may also be transmitted via saliva (although there is no medical consensus on the latter)?
The question here is about a man who has the virus but his liver is healthy, i.e., he is a carrier of the virus only, which means that the virus is hidden in some tissues such as the liver and it is not multiplying, but the possibility that it may revive and become active remains constant. The woman whom he wants to marry has been vaccinated against this disease previously, and the doctor says that there is no danger to her from the virus in this case, and Allah knows best. If marriage is not forbidden in this case, we hope that you can advise the sick person as to how he should speak about this disease when he proposes marriage; for example, when exactly should he tell the woman and what should he say?.
The one who is a carrier of hepatitis B or has the disease may get married to a healthy woman or a woman who is infected with this disease, if she accepts that after he tells her about his situation. It is not permissible for him to get married unless he tells her about his sickness, because concealing that is deceit which is prohibited. If he conceals it, then his wife finds out about that, she has the right to annul the marriage.
Praise be to Allah.
The one who is a carrier of hepatitis B or has the disease may get married to a healthy woman or a woman who is infected with this disease, if she accepts that after he tells her about his situation.
It is not permissible for him to get married unless he tells her about his sickness, because concealing that is deceit which is prohibited. If he conceals it, then his wife finds out about that, she has the right to annul the marriage.
It is well known medically that most people who get hepatitis B can resist it and expel it from the body, but there is a proportion of people, between five and 10%, whose bodies cannot get rid of it, so they become carriers of the disease, and in a small number the disease may develop into cirrhosis of the liver, cancer of the liver, liver failure or death. In addition to that, in 10% of those infected, the disease may become chronic and the person becomes a carrier of the virus and is able to spread the sickness to others.
The carrier of the virus usually does not have any signs or symptoms of sickness, as his liver enzymes appear normal, but he remains infected for a number of years or maybe for the rest of his life, and he is able to transmit the virus to others. Most carriers of the virus do not suffer from any real problems with hepatitis B. Although they have good health, a few of them may be more susceptible than others to chronic liver infection, cirrhosis and tumours of the liver. The tumours usually grow in people who have developed cirrhosis of the liver.
In order to prevent spread of this virus via carriers of the virus, it is essential to do the following:
As to how to tell the woman he wants to propose to do about that, he should explain the facts to her at the time of proposal, and tell her that he is healthy and well, but tests have shown the presence of this virus, and the doctor has told him that she will not be harmed because she has been vaccinated against it. If she agrees to marry him, then all well and good, and if she refuses and prefers to be safe and not take the risk, then she may do that.
For more details, please see the following answers: 377914, 111980, 267083, 69742, 104675.
And Allah knows best.