Handwashing and hand disinfection.
D003428:Cross Infection / Q000517:prevention & control; D004202:Disinfectants; D004203:Disinfection; D013502:General Surgery; D006225:Hand / Q000382:microbiology*; D006235:Hand Disinfection; D006801:Humans; D006920:Hygiene; D008505:Medical Staff, Hospital; D009740:Nursing Staff; D012915:Soaps; D013242:Sterilization
D004202:Disinfectants; D012915:Soaps