Fomites - microbiology, Intensive Care Units, Klebsiella pneumoniae - isolation & purification, Prospective Studies, Tertiary Care Centers, Staphylococcus aureus - isolation & purification, Humans, Medical Records, Equipment Contamination, Viridans Streptococci - isolation & purification, Incidence, Escherichia coli - isolation & purification, Hand Disinfect...