<prompt> There is an outbreak of MRSA infection in a ward. What is the best way to control the infection?Vancomycin given emperically to all the patientsFumigation of ward frequentlyWashing hand before after attending patientWearing mask before any invasive procedure in ICU  <response>: Ans. is c i.e.,Washing hand before after attending patients Given the prominence of cross infection, hand hygiene is the single most preventive measure in hospitals. 