Tendency for ear infections could occur among various family members as they can have a predisposition to the ailment.It is not necessarily hereditary. Ankylosing Spondylitis is a genetic disease and can run in families. Hepatitis B is an infectious disease But the other two are not infectious diseases. Homeopathic Medicine has good remedies to get rid of the recurrent infections and also to see that the predisposition is silenced. I am sure Homeopathic Medicine would be of great value to you and your whole family too.