My father (who has myeloma/secondary PCL) came home from the hospital with an MRSA infection on his back.  It responded to antibiotics and cleared up, but he still has the bacteria in his nose.  We've been practicing good handwashing and disinfecting surfaces.  This morning I woke with several mouth ulcers.  Could this be MRSA acquired somehow?  e.g., not using hot enough water to wash cutlery or something?  We don't share food.  I am also under a lot of stress, having been his solo caregiver through his cancer battle for the past 6 months.  Thank you, Doctor(s).

Summarized question: Is MRSA infection contagious?