Acute Pericarditis: Aetiologic Diagnosis and Practical Aspect of the Management.

Pericarditis is an uncommon pathology that represents 0.1% of patients hospitalized for chest pain with a wide etiological spectrum and whose cause is uncommonly highlighted. In order to determine the incidence of specific acute microbiological or autoimmune pericarditis and identify subsets of patients with a higher incidence of specific etiologies; and analyze the conformity of the management of acute pericarditis according to the recommendations, a retrospective inclusion of all patients admitted to our hospital from January 2010 to December 2018 with the diagnosis of acute pericarditis was conducted.

Culture-negative neonatal meningitis and endocarditis caused by Streptococcus agalactiae.

We describe a case of culture-negative meningitis and endocarditis caused by Streptococcus agalactiae in a 27-day-old boy. S. agalactiae was detected in cerebrospinal fluid and serum by broad-spectrum PCR amplification.

The siderophore receptor IroN, but not the high-pathogenicity island or the hemin receptor ChuA, contributes to the bacteremic step of Escherichia coli neonatal meningitis.

Using a neonatal rat meningitis model, we examined the involvement of three iron uptake systems, namely, the high-pathogenicity island, the hemin receptor ChuA, and the siderophore receptor IroN, in the pathogenesis of Escherichia coli neonatal meningitis. Only IroN appeared to play a major role during the bacteremic step of the disease.