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External validation of clinical prediction rules for complications and mortality following Clostridioides difficile infection.

Beauregard-Paultre C, Abou Chakra CN, McGeer A, Labbé AC, Simor AE, Gold W, Muller MP, Powis J, Katz K, Cadarette SM, Pépin J, Valiquette L.

PLoS One. 2019 Dec 17;14(12):e0226672. doi: 10.1371/journal.pone.0226672. eCollection 2019.


Influenza Vaccine Effectiveness in Preventing Hospitalizations in Older Patients With Chronic Obstructive Pulmonary Disease.

Gershon AS, Chung H, Porter J, Campitelli MA, Buchan SA, Schwartz KL, Crowcroft NS, Campigotto A, Gubbay JB, Karnauchow T, Katz K, McGeer AJ, McNally JD, Richardson DC, Richardson SE, Rosella LC, Simor AE, Smieja M, Zahariadis G, Kwong JC.

J Infect Dis. 2020 Jan 1;221(1):42-52. doi: 10.1093/infdis/jiz419.


Association of Increased Colony-Count Threshold for Urinary Pathogens in Hospitalized Patients With Antimicrobial Treatment.

Smith MA, Puckrin R, Lam PW, Lamb MJ, Simor AE, Leis JA.

JAMA Intern Med. 2019 Jul 1;179(7):990-992. doi: 10.1001/jamainternmed.2019.0188. No abstract available.


Multilocus Variable-Number Tandem-Repeat Analysis of Clostridioides difficile Clusters in Ribotype 027 Isolates and Lack of Association with Clinical Outcomes.

Garneau JR, Abou Chakra CN, Fortier LC, Labbé AC, Simor AE, Gold W, Muller M, McGeer A, Powis J, Katz K, Pépin J, Valiquette L.

J Clin Microbiol. 2019 Apr 26;57(5). pii: e01724-18. doi: 10.1128/JCM.01724-18. Print 2019 May.


Prevalence of antibiotic-resistant organisms in Canadian Hospitals. Comparison of point-prevalence survey results from 2010, 2012, and 2016.

Martin P, Abou Chakra CN, Williams V, Bush K, Dyck M, Hirji Z, Kiss A, Larios OE, McGeer A, Moore C, Weiss K, Simor AE; Infection Prevention and Control Canada.

Infect Control Hosp Epidemiol. 2019 Jan;40(1):53-59. doi: 10.1017/ice.2018.279. Epub 2018 Nov 5.


Results from the Canadian Nosocomial Infection Surveillance Program for detection of carbapenemase-producing Acinetobacter spp. in Canadian hospitals, 2010-16.

Boyd DA, Mataseje LF, Pelude L, Mitchell R, Bryce E, Roscoe D, Embree J, Katz K, Kibsey P, Lavallee C, Simor AE, Taylor G, Turgeon N, Langley JM, Amaratunga K, Mulvey MR; Canadian Nosocomial Infection Surveillance Program.

J Antimicrob Chemother. 2019 Feb 1;74(2):315-320. doi: 10.1093/jac/dky416.


Rapid Identification of Candida Species from Positive Blood Cultures by Use of the FilmArray Blood Culture Identification Panel.

Simor AE, Porter V, Mubareka S, Chouinard M, Katz K, Vermeiren C, Fattouh R, Matukas LM, Tadros M, Mazzulli T, Poutanen S.

J Clin Microbiol. 2018 Nov 27;56(12). pii: e01387-18. doi: 10.1128/JCM.01387-18. Print 2018 Dec. No abstract available.


Nosocomial outbreak of vanD-carrying vancomycin-resistant Enterococcus faecium.

Lam PW, Kozak RA, Eshaghi A, Avaness M, Salt N, Patel SN, Simor AE, Leis JA.

Infect Control Hosp Epidemiol. 2018 Oct;39(10):1266-1268. doi: 10.1017/ice.2018.174. Epub 2018 Aug 16. No abstract available.


The evolving epidemiology of Clostridium difficile infection in Canadian hospitals during a postepidemic period (2009-2015).

Katz KC, Golding GR, Choi KB, Pelude L, Amaratunga KR, Taljaard M, Alexandre S, Collet JC, Davis I, Du T, Evans GA, Frenette C, Gravel D, Hota S, Kibsey P, Langley JM, Lee BE, Lemieux C, Longtin Y, Mertz D, Mieusement LMD, Minion J, Moore DL, Mulvey MR, Richardson S, Science M, Simor AE, Stagg P, Suh KN, Taylor G, Wong A, Thampi N; Canadian Nosocomial Infection Surveillance Program.

CMAJ. 2018 Jun 25;190(25):E758-E765. doi: 10.1503/cmaj.180013.


Nasal colonization with Streptococcus pneumoniae and Staphylococcus aureus among hospitalized patients with laboratory-confirmed influenza.

Campigotto A, Simor AE, McGeer A, Kiss A, Mubareka S.

Diagn Microbiol Infect Dis. 2018 Oct;92(2):133-135. doi: 10.1016/j.diagmicrobio.2018.05.007. Epub 2018 Jun 5.


Immunogenicity and reactogenicity of high- vs. standard-dose trivalent inactivated influenza vaccine in healthcare workers: a pilot randomized controlled trial.

Volling C, Coleman BL, Katz K, Simor AE, Muller M, Powis J, McElhaney J, McGeer A.

Clin Microbiol Infect. 2019 Feb;25(2):217-224. doi: 10.1016/j.cmi.2018.05.002. Epub 2018 May 18.


Evaluation of the β-Lacta Test for Detection of Extended-Spectrum-β-Lactamase (ESBL)-Producing Organisms Directly from Positive Blood Cultures by Use of Smudge Plates.

Hasso M, Porter V, Simor AE.

J Clin Microbiol. 2017 Dec;55(12):3560-3562. doi: 10.1128/JCM.01354-17. Epub 2017 Oct 11. No abstract available.


Community- and Healthcare-Associated Methicillin-Resistant Staphylococcus aureus Strains: An Investigation Into Household Transmission, Risk Factors, and Environmental Contamination.

Ng W, Faheem A, McGeer A, Simor AE, Gelosia A, Willey BM, Watt C, Richardson DC, Wong H, Ostrowska K, Vernich L, Muller MP, Gnanasuntharam P, Porter V, Katz K.

Infect Control Hosp Epidemiol. 2017 Jan;38(1):61-67. doi: 10.1017/ice.2016.245. Epub 2016 Nov 8.


Acquisition of methicillin-resistant Staphylococcus aureus (MRSA) in contacts of patients newly identified as colonized or infected with MRSA in the immediate postexposure and postdischarge periods.

Williams VR, Callery S, Vearncombe M, Simor AE.

Am J Infect Control. 2017 Mar 1;45(3):295-297. doi: 10.1016/j.ajic.2016.09.009. Epub 2016 Oct 17.


Results from the Canadian Nosocomial Infection Surveillance Program on Carbapenemase-Producing Enterobacteriaceae, 2010 to 2014.

Mataseje LF, Abdesselam K, Vachon J, Mitchel R, Bryce E, Roscoe D, Boyd DA, Embree J, Katz K, Kibsey P, Simor AE, Taylor G, Turgeon N, Langley J, Gravel D, Amaratunga K, Mulvey MR.

Antimicrob Agents Chemother. 2016 Oct 21;60(11):6787-6794. doi: 10.1128/AAC.01359-16. Print 2016 Nov.


Patient Characteristics and Outcomes of Outpatient Parenteral Antimicrobial Therapy: A Retrospective Study.

Yan M, Elligsen M, Simor AE, Daneman N.

Can J Infect Dis Med Microbiol. 2016;2016:8435257. doi: 10.1155/2016/8435257. Epub 2016 Feb 22.


Incidence and Risk Factors for Infection Following Transcatheter Aortic Valve Implantation.

Shi Y, Wijeysundera HC, Fremes SE, Simor AE.

Infect Control Hosp Epidemiol. 2016 Sep;37(9):1094-7. doi: 10.1017/ice.2016.128. Epub 2016 Jun 20.


Determinants of Outcome in Hospitalized Patients With Methicillin-Resistant Staphylococcus aureus Bloodstream Infection: Results From National Surveillance in Canada, 2008-2012.

Simor AE, Pelude L, Golding G, Fernandes R, Bryce E, Frenette C, Gravel D, Katz K, McGeer A, Mulvey MR, Smith S, Weiss K; Canadian Nosocomial Infection Surveillance Program.

Infect Control Hosp Epidemiol. 2016 Apr;37(4):390-7. doi: 10.1017/ice.2015.323. Epub 2016 Jan 19.


Bacteremia caused by a mecA-positive oxacillin-susceptible Staphylococcus aureus strain with inducible resistance.

Kong LY, Jean A, Wong H, Semret M, Frenette C, Simor AE, Fenn S, Loo VG.

Diagn Microbiol Infect Dis. 2015 Dec;83(4):377-8. doi: 10.1016/j.diagmicrobio.2015.09.001. Epub 2015 Sep 4. No abstract available.


Factors Associated With Complications of Clostridium difficile Infection in a Multicenter Prospective Cohort.

Abou Chakra CN, McGeer A, Labbé AC, Simor AE, Gold WL, Muller MP, Powis J, Katz K, Garneau JR, Fortier LC, Pépin J, Cadarette SM, Valiquette L.

Clin Infect Dis. 2015 Dec 15;61(12):1781-8. doi: 10.1093/cid/civ749. Epub 2015 Sep 3.


Indwelling urinary catheter surveillance using a Task-oriented nurse acuity system.

Leis JA, Corpus C, Catt B, Jinnah F, Edgar B, Wong BM, Callery S, Simor AE, Vearncombe M.

Am J Infect Control. 2015 Oct 1;43(10):1112-3. doi: 10.1016/j.ajic.2015.05.046. Epub 2015 Jul 17.


Is the prevalence of antibiotic-resistant organisms changing in Canadian hospitals? Comparison of point-prevalence survey results in 2010 and 2012.

Williams V, Simor AE, Kiss A, McGeer A, Hirji Z, Larios OE, Moore C, Weiss K; Infection Prevention and Control—Canada.

Clin Microbiol Infect. 2015 Jun;21(6):553-9. doi: 10.1016/j.cmi.2015.01.024. Epub 2015 Feb 10.


Elevator buttons as unrecognized sources of bacterial colonization in hospitals.

Kandel CE, Simor AE, Redelmeier DA.

Open Med. 2014 Jul 8;8(3):e81-6. eCollection 2014.


Previous antibiotic exposure and antimicrobial resistance in invasive pneumococcal disease: results from prospective surveillance.

Kuster SP, Rudnick W, Shigayeva A, Green K, Baqi M, Gold WL, Lovinsky R, Muller MP, Powis JE, Rau N, Simor AE, Walmsley SL, Low DE, McGeer A; Toronto Invasive Bacterial Diseases Network.

Clin Infect Dis. 2014 Oct;59(7):944-52. doi: 10.1093/cid/ciu497. Epub 2014 Jun 27.


Characterization of methicillin-resistant Staphylococcus aureus isolates from patients with persistent or recurrent bacteremia.

Wong H, Watt C, Elsayed S, John M, Johnson G, Katz K, Krajden S, Lee C, Mazzulli T, Ostrowska K, Richardson D, Toye B, Vermeiren C, Yamamura D, Simor AE.

Can J Infect Dis Med Microbiol. 2014 Mar;25(2):83-6.


Pneumococcal vaccination programs and the burden of invasive pneumococcal disease in Ontario, Canada, 1995-2011.

Rudnick W, Liu Z, Shigayeva A, Low DE, Green K, Plevneshi A, Devlin R, Downey J, Katz K, Kitai I, Krajden S, Ostrowska K, Richardson D, Richardson S, Sarabia A, Silverman M, Simor AE, Tyrrell G, McGeer A; Toronto Invasive Bacterial Diseases Network.

Vaccine. 2013 Dec 2;31(49):5863-71. doi: 10.1016/j.vaccine.2013.09.049. Epub 2013 Oct 5.


Epidemiology and outcome of pneumonia caused by methicillin-resistant Staphylococcus aureus (MRSA) in Canadian hospitals.

Tadros M, Williams V, Coleman BL, McGeer AJ, Haider S, Lee C, Iacovides H, Rubinstein E, John M, Johnston L, McNeil S, Katz K, Laffin N, Suh KN, Powis J, Smith S, Taylor G, Watt C, Simor AE.

PLoS One. 2013 Sep 17;8(9):e75171. doi: 10.1371/journal.pone.0075171. eCollection 2013.


Prevalence of colonization and infection with methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococcus and of Clostridium difficile infection in Canadian hospitals.

Simor AE, Williams V, McGeer A, Raboud J, Larios O, Weiss K, Hirji Z, Laing F, Moore C, Gravel D; Community and Hospital Infection Control Association–Canada.

Infect Control Hosp Epidemiol. 2013 Jul;34(7):687-93. doi: 10.1086/670998. Epub 2013 May 13.


Molecular epidemiology of vancomycin-resistant enterococcal bacteraemia: results from the Canadian Nosocomial Infection Surveillance Program, 1999-2009.

McCracken M, Wong A, Mitchell R, Gravel D, Conly J, Embil J, Johnston L, Matlow A, Ormiston D, Simor AE, Smith S, Du T, Hizon R, Mulvey MR; Canadian Nosocomial Infection Surveillance Program.

J Antimicrob Chemother. 2013 Jul;68(7):1505-9. doi: 10.1093/jac/dkt054. Epub 2013 Mar 22.


An unusual cause of false-positive results with the BD GeneOhm Cdiff assay.

Louie L, Wong H, Mubareka S, Simor AE.

J Clin Microbiol. 2013 Apr;51(4):1348-9. doi: 10.1128/JCM.03341-12. Epub 2013 Jan 23. No abstract available.


Risk factors for Staphylococcus aureus surgical site infection during an outbreak in patients undergoing cardiovascular surgery.

Tadros MA, Williams VR, Plourde S, Callery S, Simor AE, Vearncombe M.

Am J Infect Control. 2013 Jun;41(6):509-12. doi: 10.1016/j.ajic.2012.07.016. Epub 2012 Dec 21.


Increasing hospital admission rates for urological complications after transrectal ultrasound guided prostate biopsy.

Nam RK, Saskin R, Lee Y, Liu Y, Law C, Klotz LH, Loblaw DA, Trachtenberg J, Stanimirovic A, Simor AE, Seth A, Urbach DR, Narod SA.

J Urol. 2013 Jan;189(1 Suppl):S12-7; discussion S17-8. doi: 10.1016/j.juro.2012.11.015.


Nosocomial transmission of New Delhi metallo-β-lactamase-1-producing Klebsiella pneumoniae in Toronto, Canada.

Lowe CF, Kus JV, Salt N, Callery S, Louie L, Khan MA, Vearncombe M, Simor AE.

Infect Control Hosp Epidemiol. 2013 Jan;34(1):49-55. doi: 10.1086/668778. Epub 2012 Nov 20.


Surveillance definitions of infections in long-term care facilities: revisiting the McGeer criteria.

Stone ND, Ashraf MS, Calder J, Crnich CJ, Crossley K, Drinka PJ, Gould CV, Juthani-Mehta M, Lautenbach E, Loeb M, Maccannell T, Malani PN, Mody L, Mylotte JM, Nicolle LE, Roghmann MC, Schweon SJ, Simor AE, Smith PW, Stevenson KB, Bradley SF; Society for Healthcare Epidemiology Long-Term Care Special Interest Group.

Infect Control Hosp Epidemiol. 2012 Oct;33(10):965-77. doi: 10.1086/667743.


National surveillance of methicillin-resistant Staphylococcus aureus among hospitalized pediatric patients in Canadian acute care facilities, 1995-2007.

Matlow A, Forgie S, Pelude L, Embree J, Gravel D, Langley JM, Saux NL, Moore D, Mounchili A, Mulvey M, Shurgold J, Simor AE, Thomas E, Vayalumkal J; Canadian Nosocomial Infection Surveillance Program.

Pediatr Infect Dis J. 2012 Aug;31(8):814-20. doi: 10.1097/INF.0b013e31825c48a0.


Highly active anti-retroviral therapy in the prevention of mother-to-child transmission of HIV in rural Zimbabwe during the socio-economic crisis.

Thistle P, Bolotin S, Lam E, Schwarz D, Pilon R, Ndawana B, Simor AE, Silverman M.

Med Confl Surviv. 2011 Jul-Sep;27(3):165-76.


Audit of antibiotic duration of therapy, appropriateness and outcome in patients with nosocomial pneumonia following the removal of an automatic stop-date policy.

Do J, Walker SA, Walker SE, Cornish W, Simor AE.

Eur J Clin Microbiol Infect Dis. 2012 Aug;31(8):1819-31. doi: 10.1007/s10096-011-1507-4. Epub 2012 Jan 11. Erratum in: Eur J Clin Microbiol Infect Dis. 2013 Feb;32(2):299.


Staphylococcal decolonisation: an effective strategy for prevention of infection?

Simor AE.

Lancet Infect Dis. 2011 Dec;11(12):952-62. doi: 10.1016/S1473-3099(11)70281-X. Review.


Impact of accessory gene regulator (agr) dysfunction on vancomycin pharmacodynamics among Canadian community and health-care associated methicillin-resistant Staphylococcus aureus.

Tsuji BT, MacLean RD, Dresser LD, McGavin MJ, Simor AE.

Ann Clin Microbiol Antimicrob. 2011 May 20;10:20. doi: 10.1186/1476-0711-10-20.


Rapid identification of community-associated methicillin-resistant Staphylococcus aureus by Fourier transform infrared spectroscopy.

Amiali NM, Golding GR, Sedman J, Simor AE, Ismail AA.

Diagn Microbiol Infect Dis. 2011 Jun;70(2):157-66. doi: 10.1016/j.diagmicrobio.2010.12.016.


Symptom reporting compared with audiometry for the detection of cochleotoxicity in patients on long-term aminoglycoside therapy.

Palmay L, Walker SA, Walker SE, Simor AE.

Ann Pharmacother. 2011 May;45(5):590-5. doi: 10.1345/aph.1P729. Epub 2011 Apr 26.


Genotypic and phenotypic characterization of methicillin-susceptible Staphylococcus aureus isolates misidentified as methicillin-resistant Staphylococcus aureus by the BD GeneOhm MRSA assay.

Stamper PD, Louie L, Wong H, Simor AE, Farley JE, Carroll KC.

J Clin Microbiol. 2011 Apr;49(4):1240-4. doi: 10.1128/JCM.02220-10. Epub 2011 Feb 9.


Evaluation of a new chromogenic medium (StrepB select) for detection of group B Streptococcus from vaginal-rectal specimens.

Louie L, Kotowich L, Meaney H, Vearncombe M, Simor AE.

J Clin Microbiol. 2010 Dec;48(12):4602-3. doi: 10.1128/JCM.01168-10. Epub 2010 Oct 20.


Characterization of Staphylococcus aureus isolates with a partial or complete absence of staphylococcal cassette chromosome elements.

Wong H, Louie L, Lo RY, Simor AE.

J Clin Microbiol. 2010 Oct;48(10):3525-31. doi: 10.1128/JCM.00775-10. Epub 2010 Jul 28.


Diagnosis, management, and prevention of Clostridium difficile infection in long-term care facilities: a review.

Simor AE.

J Am Geriatr Soc. 2010 Aug;58(8):1556-64. doi: 10.1111/j.1532-5415.2010.02958.x. Epub 2010 Jul 14. Review.


End-of-life treatment and bacterial antibiotic resistance: a potential association.

Levin PD, Simor AE, Moses AE, Sprung CL.

Chest. 2010 Sep;138(3):588-94. doi: 10.1378/chest.09-2757. Epub 2010 May 14.


Multicenter study to determine disk diffusion and broth microdilution criteria for prediction of high- and low-level mupirocin resistance in Staphylococcus aureus.

Swenson JM, Wong B, Simor AE, Thomson RB, Ferraro MJ, Hardy DJ, Hindler J, Jorgensen J, Reller LB, Traczewski M, McDougal LK, Patel JB.

J Clin Microbiol. 2010 Jul;48(7):2469-75. doi: 10.1128/JCM.00340-10. Epub 2010 May 5.

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