This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Microbiology
Most effective way of preventing hospital infection is: 
Select and explain. 
A. Fumigation, B. Sterilization, C. Hand washing, D. Early diagnosis and treatment
C: Hand washing
Answer: C: Hand washing 
Explanation: Ans. C. Hand washingHand of healthcare personnel ae the most important reservoir for transmission of healthcare associated infections