Integrated Management of Childhood Illness, or IMCI, is a systematic approach to children's health which focuses on the whole child. This means not only focusing on curative care but also on prevention of disease. The approach was developed by United Nations Children's Fund and the World Health Organization in 1995. Integrated Management of Childhood Illness, or IMCI, is a systematic approach to children's health which focuses on the whole child. This means not only focusing on curative care but also on prevention of disease. The approach was developed by United Nations Children's Fund and the World Health Organization in 1995.