This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Microbiology
There is an outbreak of MRSA infection in a ward. What is the best way to control the infection 
Select and explain. 
A. Vancomycin given emperically to all the patients, B. Fumigation of ward frequently, C. Washing hand before and after attending patients, D. Wearing mask before any invasive procedure in ICU
C: Washing hand before and after attending patients
Answer: C: Washing hand before and after attending patients 
Explanation: Hand washing, the oldest, simplest and most effective method of checking hospital cross an infection, which unfounately is often neglected. Ref: Ananthanarayan& Paniker&;s textbook of microbiology, 9th edition.