Editorial
Genina Iacobone

Meningitis Epidemics caused by Neisseria meningitidis in serum groups W135 and A in Burkina Faso in 2002, 2003 and 2004
Dr. Daogo S. Zombré, Dr. Sylvestre R. M. Tiendrébéogo, Dr Souleymane Sanou

A new mathematical approach to optimize peritoneal dialysis
Alfio Quarteroni

Who is afraid of big bad China?
Livio Caputo