Hypogammaglobulinaemia means there are low levels of immunoglobulins (also known as antibodies) in the body. These are part of the immune system which is the body’s defence against infection.
Transient hypogammaglobulinaemia of infancy (THI) is a mild form of the condition that can affect young children. The immune system matures more slowly than usual, but eventually functions entirely normally. It is quite common and often does not produce any symptoms.
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