Wong-McClure RA, Ramírez-Salas E, Mora-Brenes N, Aguero-Sandí L, Morera-Sigler M, Badilla-Vargas X, Hernández-de Merzerville M, O’Shea M, Bryce E (2013) Long term effect of infection control practices and associated factors during a major Clostridium difficile outbreak in Costa Rica. J Infect Dev Ctries 7:914–921. doi: 10.3855/jidc.2854