Distribution of MRSA and C. difficile contamination in the ward environment by week and visit. The arrow indicates when an MRSA outbreak (weeks 8–13) and an influenza outbreak (weeks 9–11) occurred in the hospital. N = number of surfaces sampled.
Faires et al. BMC Infectious Diseases 2013 13:342 doi:10.1186/1471-2334-13-342