[VRS bronchiolitis with severe hyponatremia leading to acute seizures: a report of three cases].

Acute bronchiolitis due to respiratory syncytial virus (RSV) can present with extrapulmonary manifestations, notably severe hyponatremia. Hyponatremia is caused by excess secretion of antidiuretic hormone and can be exacerbated by intravenous infusion of hypotonic solutions. We report three cases of infants admitted for acute bronchiolitis and hyponatremia leading to acute seizures.

[Orbital bone infarction in a child with homozygous sickle cell disease].

Vaso-occlusive crises are the most common complication of sickle cell disease. Orbital bone infarction is an unusual manifestation of sickling disorders. It is suspected in patients with acute painful periorbital swelling.

[Surveillance of Haemophilus Influenzae meningitis in children in France, 2001-2006].

Background: The implementation of Haemophilus influenzae b (Hib) vaccination program in France in 1993 resulted in a rapid and dramatic decrease of the Hib meningitis incidence in children. The aim of our study was to describe the residual Haemophilus influenzae (Hi) meningitis in the French paediatric population between 2001 and 2006.

Methods: The French Paediatric Infectious Diseases Group set up an active surveillance network to analyze the clinical and biological features of bacterial meningitis.

[Human herpesvirus 6 encephalitis after bone marrow transplantation].

Human herpesvirus 6 (HHV-6) encephalitis may induce neurological sequelae and death; the diagnosis is difficult because of an initially poor symptomatology and of the absence of specific biochemical, electric and radiological signs. We report on a 7-year-old boy with relapsed acute lymphoblastic leukaemia, who developed HHV-6 encephalitis after bone marrow transplantation; the patient recovered after treatment with ganciclovir.