First Case of Human Infection Due to Pseudomonas Navegación de entradas Surveillance of invasive in Streptococcus pneumoniae in Argentina 1994–2007: Changes in serotype distribution, serotype coverage of pneumococcal conjugate vaccines and antibiotic resistance Controlling False-Positive Results Obtained with the Hodge and Masuda Assays for Detection of Class A Carbapenemase in Species of Enterobacteriaceae by Incorporating Boronic Acid