[A fatal influenza infection in a 10-year-old boy].

A previously healthy 10-year-old boy died a few days after onset of septicaemia with non-specific clinical symptoms. Influenza B virus was isolated post mortem from pulmonary tissue. The histopathological findings did not indicate a virus disease. Specimens were taken for virus culture from other people in contact with the patient and affected with influenza-like illnesses. One other strain of influenza B virus was isolated. The strains could not be distinguished either serologically or genetically from other influenza B isolates of the season 1992/'93.