# Healthcare Associated Infection --- **Health-care Associated Infections**, or HAIs are [[infection|infections]] that are not present in a patient when the enter a healthcare facility, but develop over the course of their stay. C. Difficile stands for C. difficile • Most common cause of HAIs Methicillin-resistant S. aureus (MRSA) • Healthcare-associated rvIRSA • Community-associated NIRSA Vancomycin-resistant enterococcus (VRE) Multidrug-resistant organisms (MDROs) ___