ICU is an infection free area. It requires efforts not only from the medical staff but also from the relatives of the patient to keep its environment free from infection. This is the reason that the time to meet patients in the ICU is fixed. This rule prevents the patients from getting additional infection and provides proper rest and sleep. The medical team also does not face any problem in treating the patients. For the safety of patients and maintaining an infection-free environment, it is important that people enter the ICU wearing masks, caps and sterile gowns.