Severe bacterial infections affecting multiple body organs, called severe sepsis (including meningococcal sepsis), remain an important cause of death and disability among children. Although early recognition, powerful antibiotics, and good intensive care have improved outcome, we need new ways to further reduce the number of deaths. Research in adults has shown that steroid replacement therapy might be useful. However, children are known to respond differently to adults and a definitive trial in children is needed because of the potentially harmful as well as beneficial effects of steroids.