ANSWER:
Hand hygiene is a critical interposition which should be handled at right times in the right way to all the members of medical staff that comes in contact with the patients. 
EXPLANATION:
- For a patient a mundane experience of healthcare and expected outcomes is all that matters, infection prevention and control are main factors highly contributing to that. 
- Respiratory hygiene is also critical in order to prevent transmission of respiratory infections in a healthcare setting. 
- Improving hand and respiratory hygiene reduces healthcare time and cost by preventing infection and harm.