Wipe it down!
paper in American Journal of Infection Control that looks at stethoscope contamination. The authors cultured 112 stethoscopes; 48 (43%) were found to have pathogens on the diaphragms. Of the 50 pathogens isolated, 3 were gram-negative rods, 4 were E. faecalis, and 43 were S. aureus. Of the S. aureus isolates, 18 were MRSA. Despite the fact that stethoscope contamination is common, I see little effort in the infection prevention community to address this. So here's another reminder to wipe down that stethoscope!