Hospital Acquired Infections (HAIs) are among the most common complications of hospital care, leading to high morbidity and mortality. While WHO estimates about 7-12% HAI burden in hospitalized patients globally, with more than 1.4 million people suffering from infectious complications acquired in the hospital at any time. The figures from India are alarming, with an incidence rate varying from 11% to 83% for different kinds of HAIs [Dr. V Ramasubramanian, Apollo Hospital, Chennai, Indian Journal of Basic and Applied Medical Research; September 2014: Vol.-3, Issue- 4, P. 46-63 ].
Two main mode of getting HAI is through contact and/or through airborne germs. The infection through contact (healthcare person to patient, patient to patient) can be controlled by proper housekeeping and good hand hygiene practices. The airborne microbes are difficult to control because it needs poisonous chemicals to kill microbes and the room need to be isolated during fumigation, the typical cleaning process or use HEPA filters.