Ms Martin-Granel is a professeur certifiée de lettres classiques and teaches French literature, Latin, and Ancient Greek in secondary school in the south of France. She has recently translated a text by Petrarch into French. Human Bocavirus in Children  To the Editor: Respiratory tract infection is a major cause of illness in children. Despite the availability of sensitive diagnostic methods, detecting infectious agents is difficult in a substantial proportion of respiratory samples from children with respiratory tract disease (1) . This fact suggests the existence of currently unknown respiratory pathogens.