[Human parvovirus B19 as the cause of aplastic crisis in hereditary spherocytosis].

A seven months old boy was admitted to hospital for investigation and treatment of severe anaemia. The final diagnosis was hereditary spherocytosis. When, six weeks later, he developed an aplastic crisis, serological criteria provided evidence of recent human parvovirus B19 infection. The same disease was detected in the family. Human parvovirus B19 is shown to be of particular interest in aplastic crisis.