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Comparison of UV C Light and Chemicals for Disinfection of Surfaces in Hospital Isolation Units

Published online by Cambridge University Press:  07 April 2017

B. M. Andersen ,
H. Bånrud ,
E. Bøe ,
O. Bjordal  and
F. Drangsholt
B. M. Andersen*
Affiliation:
Department of Hospital infections and Department of Internal Services, Ullevål University Hospital, Oslo, Norway
H. Bånrud
Affiliation:
Klean ASA, Rud, Norway
E. Bøe
Affiliation:
Department of Hospital infections and Department of Internal Services, Ullevål University Hospital, Oslo, Norway
O. Bjordal
Affiliation:
Klean ASA, Rud, Norway
F. Drangsholt
Affiliation:
Faculty of Technology, Sør-Trøndelag University College, Trondheim, Norway
*
Department of Hospital Infections, Ulleval University Hospital, 0407 Oslo, Norway ([email protected])
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Abstract

Objective.

To determine the bactericidal effect on surfaces of ceiling- and wall-mounted UV C (UVC) light (wavelength, 254 nm) in isolation units, compared with standard hospital environmental cleaning and chemical disinfection during final disinfection after patients are treated for infections.

Design.

Microbial samples were obtained from surfaces in isolation units (patient room, anteroom, and bathroom) before and after irradiation with UVC, chloramine disinfection, and standard hospital environmental cleaning. Samples were tested using standard contact plates.

Setting.

Four identical, negative air-pressure isolation units (patient room, anteroom, and bathroom) with a defined number of ceiling-and wall-mounted UVC light units. The UVC distribution was monitored in one isolation unit after irradiation for approximately 40 minutes, corresponding to doses ranging from 160 J/m2 in a shadowed area to 19,230 J/m2 at the mostly highly exposed site (which is high enough to inactivate most bacterial organisms, including spores).

Results.

UVC disinfection significantly reduced the number of bacteria on surfaces directly or indirectly exposed to UVC to a very low number, as did 5% chloramine disinfection alone (P<.001 for both). Completely shadowed areas in the isolation unit (eg, the bed rail, lockers, and mattresses) still required disinfection by chemicals.

Conclusion.

Disinfection with UVC light may significantly reduce environmental bacterial contamination and thereby protect the next patient housed in an isolation room. UVC disinfection may not be used alone but is a good addition to chemical disinfection.

Type
Original Articles
Information
Infection Control & Hospital Epidemiology , Volume 27 , Issue 7 , July 2006 , pp. 729 - 734
Copyright
Copyright © The Society for Healthcare Epidemiology of America 2006

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References

1.Dancer, SJ. Mopping up hospital infection. J Hosp Infect 1999; 43:85–100.CrossRefGoogle ScholarPubMed
2.Andersen, BM, Solheim, N, Kruger, Ø, Levy, F, Sogn, K, Moløkken, I. Floor cleaning in patient rooms: effect of bacteria on soil and particles in air. Tidsskr Nor Loegeforen 1997; 117:838–841.Google Scholar
3.Griffith, CJ, Cooper, RA, Gilmore, J, Davies, C, Lewis, M. An evaluation of hospital cleaning regimes and standards. J Hosp Infect 2000; 45:19–28.Google Scholar
4.Rutala, WA, Weber, DJ. Environmental interventions to control nosocomial infections. Infect Control Hosp Epidemiol 1995; 16:442–443.Google Scholar
5.Levin, AS, Gobara, S, Mendes, C, Cursino, R, Sinto, S. Environmental contamination by multidrug-resistant Acinetobacter baumannii in an intensive care unit. Infect Control Hosp Epidemiol 2001; 22:717–720.Google Scholar
6.Garner, JS. Guideline for isolation precautions in hospitals. The Hospital Infection Control Practices Advisory Committee. Infect Control Hosp Epidemiol 1996; 17:53–80CrossRefGoogle ScholarPubMed
7.Sehulster, L, Chinn, RY, CDC, HICPAC. Guidelines for environmental infection control in health-care facilities: recommendations of CDC and the Healthcare Infection Control Practices Advisory Committee (HICPAC). MMWR Recomm Rep 2003; 52(RR-10):1–42.Google ScholarPubMed
8.Fjellet, AL, Brubakk, O, Hochlin, K, Solheim, N, Andersen, BM. Isolation procedures. In: Andersen, BM, ed. Handbook in Hygiene and Infection Control. Oslo: Ullevål University Hospital; 2003:100–127.Google Scholar
9.Sharp, G. The lethal action of short ultraviolet rays on several common pathogenic bacteria. J Bacterial 1939; 37:447–459.Google Scholar
10.Riley, RL, Nardell, EA. Clearing the air: the theory and application of ultraviolet air disinfection. Am Rev Respir Dis 1989; 139:1286–1294.Google Scholar
11.Riley, RL, Mills, CC, O'Grady, FO, Sultan, LU, Wittstadt, F, Shivpuri, DN. Infectiousness of air from tuberculosis ward. Ultraviolet irradiation of infected air: comparative infectiousness of different patients. Am Rev Respir Dis 1962; 85:511–525Google ScholarPubMed
12.Nardell, EA. Interrupting transmission from patients with unsuspected tuberculosis: a unique role for upper-room ultraviolet air disinfection. AM J Infect Control 1995; 23:156–164.Google Scholar
13.Wallner-Pendleton, EA, Summer, SS, Froning, GW, Stetson, LE. The use of ultraviolet radiation to reduce Salmonella and psychotrophic bacterial contamination on poultry carcasses. Poult Sci 1994; 73:1327–1333.Google Scholar
14.Ishida, H, Nahara, Y, Tamamoto, M, Hamada, T. The fungicidal effect of ultraviolet light on impression materials. J Prosthet Dent 1991; 65:532–535.Google Scholar
15.Young, AR, Björn, LO, Moan, J, Nultsch, W, eds. Environmental UV Photobiology. New York: Plenum Press; 1993CrossRefGoogle Scholar
16.Riley, RL, Kaufman, JE. Air disinfection in corridors by upper air irradiation with ultraviolet. Arch Environ Health 1971; 22:551–553.Google Scholar
17.Hart, D, Durham, NC. Bactericidal ultraviolet radiation in the operating room: twenty-nine year study for control of infections. JAMA 1960; 172: 1019–1028.Google Scholar
18.Bånrud, H, Moan, J. The use of UCV for disinfection in operating rooms. Tidsskr Nor Loegeforen 1999; 119:2670–2673.Google Scholar
19.Technical Project Report: Air Quality, Destruction of Microbes, and Use of Negative-Pressure, Filter, and UVC Technology in Patient Isolates. Oslo: Klean, Siemens, Ullevål University Hospital; 2000.Google Scholar
20.Hyllseth, B, Bånrud, H. Literature concerning UVC (J/m2) inactivation of microbes. In: Technical Project Report: Air Quality, Destruction of Microbes, and Use of Negative-Pressure, Filter, and UVC Technology in Patient Isolates. Oslo: Klean, Siemens, Ullevål University Hospital; 2000 (attachment).Google Scholar
21.Moss, CE, Seitz, TA. Ultraviolet radiation exposure to health care workers from germicidal lamps. Appl Occup Environ Hyg 1991; 6:168–170.Google Scholar
22.Forsyth, A, Ide, CW, Moseley, H. Acute sunburn due to accidental irradiation with UVC. Contact Dermatitis 1991; 24:141–142.Google Scholar
23.International Radiation Protection Association. IRPA Guidelines on Protection Against Non-ionizing Radiation: the Collected Publications of the IRPA Non-ionizing Radiation Committee. New York: Pergamon Press; 1991.Google Scholar
24.French, GL, Otter, JA, Shannon, KP, Adams, NM, Watling, D, Parks, MJ. Tackling contamination of the hospital environment by methicillin-resistant Staphylococcus aureus (MRSA): a comparison between conventional terminal cleaning and hydrogen peroxide vapour decontamination. J Hosp Infect 2004; 57:31–37.Google Scholar