Population genetic structure, serotype distribution and antibiotic resistance of Streptococcus pneumoniae causing invasive disease in children in Argentina Navegación de entradas Novel complex class 1 integron carrying qnrB10 and blaCTX-M-2 in a twin variable region 2 found in a clinical Citrobacter freundii from Argentina. Staphylococcus pseudintermedius’s PBP4 Is Directly Associated with the Dissociated Oxacillin and Cefoxitin Phenotype