Characterization of AmpC ß-lactamase mutations of extensively drug-resistant Pseudomonas aeruginosa isolates that develop resistance to ceftolozane/tazobactam during therapy Marta Fernández-Esgueva; Ana Isabel López-Calleja; Xavier Mulet; Pablo A. Fraile-Ribot; Gabriel Cabot; Rafael Huarte; Antonio Rezusta; Antonio Oliver;

Abscessed cellulitis with a sporotrichoid pattern that does not yield to antibiotic treatment María Nieves Carmona-Tello; Michelle Hernández-Cabrera; María del Carmen Lavilla-Salgado; Margarita Bolaños-Rivero;

Infections due to Vagococcus spp. Microbiological and clinical aspects and literature review Laura Racero; Claudia Barberis; Germán Traglia; María Susana Loza; Carlos Vay; Marisa Almuzara;