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Michelle Alfa

Research Profile

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TOP 3
Michelle J Alfa
Monitoring and improving the effectiveness of cleaning medical and surgical devices.
Michelle J Alfa; Louise Buelow-Smith; Nancy Olson; Brenda-Lee Murray
Alkaline detergent combined with a routine ward bedpan washer disinfector cycle eradicates Clostridium difficile spores from the surface of plastic bedpans.
Michelle J Alfa; Iram Fatima; Nancy Olson
Validation of adenosine triphosphate to audit manual cleaning of flexible endoscope channels.

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All Publications

2013: Michelle J Alfa
Monitoring and improving the effectiveness of cleaning medical and surgical devices.
American journal of infection control 2013;41(5 Suppl):S56-9.
2013: Michelle J Alfa; Louise Buelow-Smith; Nancy Olson; Brenda-Lee Murray
Alkaline detergent combined with a routine ward bedpan washer disinfector cycle eradicates Clostridium difficile spores from the surface of plastic bedpans.
American journal of infection control 2013;41(4):381-3.
2013: Michelle J Alfa; Iram Fatima; Nancy Olson
Validation of adenosine triphosphate to audit manual cleaning of flexible endoscope channels.
American journal of infection control 2013;41(3):245-8.
2013: Michelle J Alfa; Iram Fatima; Nancy Olson
The adenosine triphosphate test is a rapid and reliable audit tool to assess manual cleaning adequacy of flexible endoscope channels.
American journal of infection control 2013;41(3):249-53.
2012: Michelle J Alfa; Pat Degagné; Nancy Olson; Patricia J Simner
Development and validation of rapid use scope test strips to determine the efficacy of manual cleaning for flexible endoscope channels.
American journal of infection control 2012;40(9):860-5.
2012: Philippe R S Lagacé-Wiens; Crystal Miller; Kimberly A Nichol; Paulette F Pang; Amanda A Webb; Heather J Adam; Jodi Guenther; James A Karlowsky; Michelle J Alfa
Identification of blood culture isolates directly from positive blood cultures by use of matrix-assisted laser desorption ionization-time of flight mass spectrometry and a commercial extraction system: analysis of performance, cost, and turnaround time.
Journal of clinical microbiology 2012;50(10):3324-8.
2012: James A Karlowsky; Michael R Mulvey; Ethan Rubinstein; John Wylie; George G Zhanel; Tim Du; Greg W Hammond; Michelle J Alfa
Multidrug-resistant North American pulsotype 2 Clostridium difficile was the predominant toxigenic hospital-acquired strain in the province of Manitoba, Canada, in 2006-2007.
Journal of medical microbiology 2012;61(Pt 5):693-700.
2012: Michelle J Alfa; Nancy Olson; Shadi Sepehri; Alana Wald
Establishing a clinically relevant bioburden benchmark: a quality indicator for adequate reprocessing and storage of flexible gastrointestinal endoscopes.
American journal of infection control 2012;40(3):233-6.
2012: Michelle J Alfa
The 'pandora's box' dilemma: reprocessing of implantable screws and plates in orthopedic tray sets.
Biomedical instrumentation & technology / Association for the Advancement of Medical Instrumentation 2012;Suppl():55-9.
2011: Kamran Kadkhoda; Kanchana Manickam; Pat DeGagne; Pat Sokolowski; Paulette Pang; Nick Kontzie; Michelle J Alfa
UF-1000i flow cytometry is an effective screening method for urine specimens.
Diagnostic microbiology and infectious disease 2011;69(2):130-6.
2010: Oscar E Larios; Kathryn A Bernard; Kanchana Manickam; Betty Ng; Michelle J Alfa; Allan Ronald
First report of Actinobaculum schaalii urinary tract infection in North America.
Diagnostic microbiology and infectious disease 2010;67(3):282-5.
2010: Michelle J Alfa; Evelyn Lo; Alana Wald; Christine Dueck; Pat DeGagne; Godfrey K M Harding
Improved eradication of Clostridium difficile spores from toilets of hospitalized patients using an accelerated hydrogen peroxide as the cleaning agent.
BMC infectious diseases 2010;10():268.
2010: Michelle J Alfa; Pat DeGagne; Nancy Olson; Iram Fatima
EVOTECH endoscope cleaner and reprocessor (ECR) simulated-use and clinical-use evaluation of cleaning efficacy.
BMC infectious diseases 2010;10():200.
2009: Ruth Murray; Dave Boyd; Paul N Levett; Michael R Mulvey; Michelle J Alfa
Truncation in the tcdC region of the Clostridium difficile PathLoc of clinical isolates does not predict increased biological activity of Toxin B or Toxin A.
BMC infectious diseases 2009;9():103.
2009: Michelle J Alfa; Rosemarie Howie
Modeling microbial survival in buildup biofilm for complex medical devices.
BMC infectious diseases 2009;9():56.
2008: R Howie; Michelle J Alfa; Kevin M Coombs
Survival of enveloped and non-enveloped viruses on surfaces compared with other micro-organisms and impact of suboptimal disinfectant exposure.
The Journal of hospital infection 2008;69(4):368-76.
2008: Philippe R S Lagacé-Wiens; Michelle J Alfa; Kanchana Manickam; Godfrey K M Harding
Reductions in workload and reporting time by use of methicillin-resistant Staphylococcus aureus screening with MRSASelect medium compared to mannitol-salt medium supplemented with oxacillin.
Journal of clinical microbiology 2008;46(4):1174-7.
2008: Michelle J Alfa; Nancy Olson; Louise Buelow-Smith
Simulated-use testing of bedpan and urinal washer disinfectors: evaluation of Clostridium difficile spore survival and cleaning efficacy.
American journal of infection control 2008;36(1):5-11.
2008: Michelle J Alfa; Christine Dueck; Nancy Olson; Pat DeGagne; Selena Papetti; Alana Wald; Evelyn Lo; Godfrey Harding
UV-visible marker confirms that environmental persistence of Clostridium difficile spores in toilets of patients with C. difficile-associated diarrhea is associated with lack of compliance with cleaning protocol.e.
BMC infectious diseases 2008;8():64.
2007: Philippe R S Lagacé-Wiens; Michelle J Alfa; Kanchana Manickam; James A Karlowsky
Thermostable DNase is superior to tube coagulase for direct detection of Staphylococcus aureus in positive blood cultures.
Journal of clinical microbiology 2007;45(10):3478-9.
2007: Philippe R S Lagacé-Wiens; Kim A Nichol; Lindsay E Nicolle; Melanie R DeCorby; Melissa McCracken; Michelle J Alfa; Michael Mulvey; George G Zhanel
ESBL genotypes in fluoroquinolone-resistant and fluoroquinolone-susceptible ESBL-producing Escherichia coli urinary isolates in Manitoba.
The Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie médicale / AMMI Canada 2007;18(2):133-7.
2006: Michelle J Alfa; Nancy Olson; Pat DeGagne
Automated washing with the Reliance Endoscope Processing System and its equivalence to optimal manual cleaning.
American journal of infection control 2006;34(9):561-70.
2006: Michelle J Alfa; Radita Nemes; Nancy Olson; A Mulaire
Manual methods are suboptimal compared with automated methods for cleaning of single-use biopsy forceps.
Infection control and hospital epidemiology : the official journal of the Society of Hospital Epidemiologists of America 2006;27(8):841-6.
2006: Samira Mubareka; Michelle J Alfa; Godfrey K Harding; Gregory Booton; Marilyn Ekins; Paul Vancaeseele
Acanthamoeba species Keratitis in a Soft Contact Lens Wearer Molecularly Linked to Well Water.
The Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie médicale / AMMI Canada 2006;17(2):120-2.
2005: Michelle J Alfa
The laboratory diagnosis of Haemophilus ducreyi.
The Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie médicale / AMMI Canada 2005;16(1):31-4.
2004: Michelle J Alfa; Janet Castillo
Impact of FDA policy change on the reuse of single-use medical devices in Michigan hospitals.
American journal of infection control 2004;32(6):337-41.
2004: Gordon Dow; Pramila Rao; Godfrey Harding; Joanna Brunka; Jim Kennedy; Michelle J Alfa; Lindsay E Nicolle
A prospective, randomized trial of 3 or 14 days of ciprofloxacin treatment for acute urinary tract infection in patients with spinal cord injury.
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2004;39(5):658-64.
2004: Michelle J Alfa; Radita Nemes
Manual versus automated methods for cleaning reusable accessory devices used for minimally invasive surgical procedures.
The Journal of hospital infection 2004;58(1):50-8.
2004: Tim Du; Michelle J Alfa
Translocation of Clostridium difficile toxin B across polarized Caco-2 cell monolayers is enhanced by toxin A.
The Canadian journal of infectious diseases = Journal canadien des maladies infectieuses 2004;15(2):83-8.
2003: Michelle J Alfa; Radita Nemes
Inadequacy of manual cleaning for reprocessing single-use, triple-lumen sphinctertomes: simulated-use testing comparing manual with automated cleaning methods.
American journal of infection control 2003;31(4):193-207.
2002: Michelle J Alfa; Diane Robson; Maria Davi; Kathy Bernard; Paul Van Caeseele; Godfrey K M Harding
An outbreak of necrotizing enterocolitis associated with a novel clostridium species in a neonatal intensive care unit.
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2002;35(Suppl 1):S101-5.
2002: Michelle J Alfa; B Swan; B VanDekerkhove; P Pang; Godfrey K M Harding
The diagnosis of Clostridium difficile-associated diarrhea: comparison of Triage C. difficile panel, EIA for Tox A/B and cytotoxin assays.
Diagnostic microbiology and infectious disease 2002;43(4):257-63.
2002: Michelle J Alfa; Nancy Olson; Pat DeGagne; Michele Jackson
Evaluation of rapid readout biological indicators for 132 degrees C gravity and 132 degrees C vacuum-assisted steam sterilization cycles using a new automated fluorescent reader.
Infection control and hospital epidemiology : the official journal of the Society of Hospital Epidemiologists of America 2002;23(7):388-92.
2002: Michelle J Alfa; Nancy Olson; Pat DeGagne; Michele Jackson
A survey of reprocessing methods, residual viable bioburden, and soil levels in patient-ready endoscopic retrograde choliangiopancreatography duodenoscopes used in Canadian centers.
Infection control and hospital epidemiology : the official journal of the Society of Hospital Epidemiologists of America 2002;23(4):198-206.
2002: Michelle J Alfa; Alexandra Ilnyckyj; Nila MacFarlane; Vivienne Preece; Sandra Allford; Beth Fachnie
Microbial overgrowth in water perfusion equipment for esophageal/rectal motility.
Gastrointestinal endoscopy 2002;55(2):209-13.
2001: Michelle J Alfa; M Jackson
A new hydrogen peroxide--based medical-device detergent with germicidal properties: comparison with enzymatic cleaners.
American journal of infection control 2001;29(3):168-77.
2000: Sheryl A Zelenitsky; L Barns; I Findlay; Michelle J Alfa; Robert E Ariano; Adrian Fine; Godfrey Harding
Analysis of microbiological trends in peritoneal dialysis-related peritonitis from 1991 to 1998.
American journal of kidney diseases : the official journal of the National Kidney Foundation 2000;36(5):1009-13.
2000: J Wolfe; Christine Turenne; Michelle J Alfa; Godfrey Harding; L Thibert; Amin Kabani
Mycobacterium branderi from both a hand infection and a case of pulmonary disease.
Journal of clinical microbiology 2000;38(10):3896-9.
2000: Michelle J Alfa; Amin Kabani; David M Lyerly; S Moncrief; L M Neville; AM al-Barrak; Godfrey K M Harding; Brenda Dyck; Karen Olekson; John M Embil
Characterization of a toxin A-negative, toxin B-positive strain of Clostridium difficile responsible for a nosocomial outbreak of Clostridium difficile-associated diarrhea.
Journal of clinical microbiology 2000;38(7):2706-14.
2000: Michelle J Alfa
Methodology of reprocessing reusable accessories.
Gastrointestinal endoscopy clinics of North America 2000;10(2):361-78.
2000: George G Zhanel; Godfrey K M Harding; Stuart Rosser; Daryl J Hoban; James A Karlowsky; Michelle J Alfa; Amin Kabani; John M Embil; Alfred Gin; T Williams; Lindsay E Nicolle
Low prevalence of VRE gastrointestinal colonization of hospitalized patients in Manitoba tertiary care and community hospitals.
The Canadian journal of infectious diseases = Journal canadien des maladies infectieuses 2000;11(1):38-41.
1999: Michelle J Alfa; Pat DeGagne; Nancy Olson
Worst-case soiling levels for patient-used flexible endoscopes before and after cleaning.
American journal of infection control 1999;27(5):392-401.
1999: Michelle J Alfa; Pat DeGagne; Godfrey Harding; K Kasdorf; R Light; K Macdonald; N Macfarlane; N Olson; A Ronald; A Simor; L Louie
Diarrhea recurrence in patients with Clostridium difficile-associated diarrhea: Role of concurrent antibiotics.
The Canadian journal of infectious diseases = Journal canadien des maladies infectieuses 1999;10(4):287-94.
1999: C L Cooper; Michelle J Alfa; Godfrey K M Harding
Biopsy forceps as a source of bacterial contamination leading to overgrowth of Helicobacter pylori culture medium with Pseudomonas aeruginosa.
Infection control and hospital epidemiology : the official journal of the Society of Hospital Epidemiologists of America 1999;20(5):300-1.
1999: AM al-Barrak; John M Embil; Brenda Dyck; Karen Olekson; Debora A Nicoll; Michelle J Alfa; Amin Kabani
An outbreak of toxin A negative, toxin B positive Clostridium difficile-associated diarrhea in a Canadian tertiary-care hospital.
Canada communicable disease report = Relevé des maladies transmissibles au Canada 1999;25(7):65-9.
1999: Stuart Rosser; Michelle J Alfa; S Hoban; J Kennedy; Godfrey K M Harding
E test versus agar dilution for antimicrobial susceptibility testing of viridans group streptococci.
Journal of clinical microbiology 1999;37(1):26-30.
1998: Michelle J Alfa; Pat DeGagne; Nancy Olson; R Hizon
Comparison of liquid chemical sterilization with peracetic acid and ethylene oxide sterilization for long narrow lumens.
American journal of infection control 1998;26(5):469-77.
1998: Tariq Madani; Godfrey K M Harding; M Helewa; Michelle J Alfa
Screening pregnant women for group B streptococcal colonization.
Infection 1998;26(5):288-91.
1998: Michelle J Alfa; T Du; G Beda
Survey of incidence of Clostridium difficile infection in Canadian hospitals and diagnostic approaches.
Journal of clinical microbiology 1998;36(7):2076-80.
1997: M C Laroche; Michelle J Alfa; Godfrey K M Harding
Isolation of toxigenic Clostridium difficile from dialysate fluid in a fatal case of chronic ambulatory peritoneal dialysis-related peritonitis.
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 1997;25(5):1248.
1997: Michelle J Alfa; Pat DeGagne; Nancy Olson
Bacterial killing ability of 10% ethylene oxide plus 90% hydrochlorofluorocarbon sterilizing gas.
Infection control and hospital epidemiology : the official journal of the Society of Hospital Epidemiologists of America 1997;18(9):641-5.
1997: Michelle J Alfa; Pat DeGagne; Nancy Olson; Godfrey K M Harding
Improved detection of bacterial growth in continuous ambulatory peritoneal dialysis effluent by use of BacT/Alert FAN bottles.
Journal of clinical microbiology 1997;35(4):862-6.
1997: Michelle J Alfa; Pat DeGagne
Attachment of Haemophilus ducreyi to human foreskin fibroblasts involves LOS and fibronectin.
Microbial pathogenesis 1997;22(1):39-46.
1996: Michelle J Alfa; Pat DeGagne; P A Totten
Haemophilus ducreyi hemolysin acts as a contact cytotoxin and damages human foreskin fibroblasts in cell culture.
Infection and immunity 1996;64(6):2349-52.
1996: K Gough; Michelle J Alfa; Godfrey Harding
Evaluation of routine enteric pathogens in hospitalized patients: A Canadian perspective.
The Canadian journal of infectious diseases = Journal canadien des maladies infectieuses 1996;7(3):197-202.
1996: Michelle J Alfa; Pat DeGagne; Nancy Olson; T Puchalski
Comparison of ion plasma, vaporized hydrogen peroxide, and 100% ethylene oxide sterilizers to the 12/88 ethylene oxide gas sterilizer.
Infection control and hospital epidemiology : the official journal of the Society of Hospital Epidemiologists of America 1996;17(2):92-100.
1995: Michelle J Alfa; J J Sisler; Godfrey K M Harding
Mycobacterium abscessus infection of a Norplant contraceptive implant site.
CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne 1995;153(9):1293-6.
1995: M P Samuel; S H Zwillich; G T Thomson; Michelle J Alfa; K B Orr; D C Brittain; J R Miller; P E Phillips
Fast food arthritis--a clinico-pathologic study of post-Salmonella reactive arthritis.
The Journal of rheumatology 1995;22(10):1947-52.
1995: Michelle J Alfa; MK Stevens; Pat DeGagne; J Klesney-Tait; Justin D Radolf; E J Hansen
Use of tissue culture and animal models to identify virulence-associated traits of Haemophilus ducreyi.
Infection and immunity 1995;63(5):1754-61.
1995: Michelle J Alfa; Joanne Embree; Pat DeGagne; Nancy Olson; J Lertzman; Kelly S MacDonald; N T Macdonald; P F Hall
Transmission of Ureaplasma urealyticum from mothers to full and preterm infants.
The Pediatric infectious disease journal 1995;14(5):341-5.
1994: John M Embil; K Ramotar; L Romance; Michelle J Alfa; J Conly; S Cronk; G Taylor; B Sutherland; T Louie; E Henderson
Methicillin-resistant Staphylococcus aureus in tertiary care institutions on the Canadian prairies 1990-1992.
Infection control and hospital epidemiology : the official journal of the Society of Hospital Epidemiologists of America 1994;15(10):646-51.
1994: T T Hollyer; Pat DeGagne; Michelle J Alfa
Characterization of the cytopathic effect of Haemophilus ducreyi.
Sexually transmitted diseases 1994;21(5):247-57.
1994: Michelle J Alfa; Pat DeGagne
A quantitative chemiluminescent ribosomal probe method for monitoring adherence of Haemophilus ducreyi to eukaryotic cells.
Microbial pathogenesis 1994;17(3):167-74.
1994: G T Thomson; Michelle J Alfa; K Orr; B R Thomson; N Olson
Serologic testing for reactive arthritis.
Clinical and investigative medicine. Médecine clinique et experimentale 1994;17(3):212-7.
1994: K Orr; G T Thomson; Michelle J Alfa
Utilization of commercial antisera and flow cytometry in HLA-B27 typing.
Cytometry 1994;18(1):17-20.
1994: Michelle J Alfa; E Ongsansoy; S Hoban; T Mathew; C Greenaway
Methicillin-resistant Staphylococcus aureus. Optimization of the agar screen plate method.
Diagnostic microbiology and infectious disease 1994;18(2):121-4.
1994: G T Thomson; Michelle J Alfa; K Orr; B R Thomson; N Olson
Secretory immune response and clinical sequelae of Salmonella infection in a point source cohort.
The Journal of rheumatology 1994;21(1):132-7.
1994: Michelle J Alfa; D L Sitter
In-hospital evaluation of orthophthalaldehyde as a high level disinfectant for flexible endoscopes.
The Journal of hospital infection 1994;26(1):15-26.
1993: Michelle J Alfa; Nancy Olson; Pat DeGagne; Francis A Plummer; W Namaara; Ian Maclean; Allan R Ronald
Humoral immune response of humans to lipooligosaccharide and outer membrane proteins of Haemophilus ducreyi.
The Journal of infectious diseases 1993;167(5):1206-10.
1993: Michelle J Alfa; Pat DeGagne; T Hollyer
Haemophilus ducreyi adheres to but does not invade cultured human foreskin cells.
Infection and immunity 1993;61(5):1735-42.
1993: A Y Kwok; X Zu; C Yang; Michelle J Alfa; F T Jay
Human interferon-gamma has three domains associated with its antiviral function: a neutralizing epitope typing scheme for human interferon-gamma.
Immunology 1993;79(1):131-7.
1992: Michelle J Alfa; C L Yang; L A Slaney; A Y Kwok; Allan R Ronald; F T Jay
Identification of highly conserved and species-specific polypeptides of Haemophilus ducreyi.
Journal of medical microbiology 1992;37(6):413-9.
1992: Michelle J Alfa; Nancy Olson; Pat DeGagne; L Slaney; Francis A Plummer; W Namaara; Allan R Ronald
Use of an adsorption enzyme immunoassay to evaluate the Haemophilus ducreyi specific and cross-reactive humoral immune response of humans.
Sexually transmitted diseases 1992;19(6):309-14.
1992: Michelle J Alfa
Cytopathic effect of Haemophilus ducreyi for human foreskin cell culture.
Journal of medical microbiology 1992;37(1):43-50.
1991: Michelle J Alfa; D L Sitter
In-hospital evaluation of contamination of duodenoscopes: a quantitative assessment of the effect of drying.
The Journal of hospital infection 1991;19(2):89-98.
1989: Joseph Odumeru; Michelle J Alfa; C F Martin; Allan R Ronald; F T Jay
Production of monoclonal antibodies specific for Haemophilus ducreyi: a screening method to discriminate specific and cross-reacting antibodies.
Hybridoma 1989;8(3):337-51.
1988: Michelle J Alfa; F T Jay
Distinct domains of recombinant human IFN-gamma responsible for anti-viral effector function.
Journal of immunology (Baltimore, Md. : 1950) 1988;141(7):2474-9.
1987: Michelle J Alfa; J J Dembinski; F T Jay
Production of monoclonal antibodies against recombinant human interferon-gamma: screening of hybridomas without purified antigen.
Hybridoma 1987;6(5):509-20.