My niece is one year old, and she is having chest infection by birth. This winter she almost caught by this infection whole season and visited Dr. Several times and having treatment. The problem is not so serious, but she suffers from flue and other such conditions. According to that Dr. As she is having this problem since her birth so it will take time to resolve, until she get 4 or 5 years old and buildup in her body. I want a suggestion please, is it a normal condition? Will she be ok by age? Does it happens in children?