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Epidemiology and Outcome Determinants of Staphylococcus aureus Bacteremia Revisited: A Population-Based Study.

Lam JC, Gregson DB, Robinson S, Somayaji R, Conly JM, Parkins MD.

Infection. 2019 Dec;47(6):961-971. doi: 10.1007/s15010-019-01330-5. Epub 2019 Jul 3.


Incidence and Outcomes of Staphylococcus aureus Bacteriuria: A Population-based Study.

Stokes W, Parkins MD, Parfitt ECT, Ruiz JC, Mugford G, Gregson DB.

Clin Infect Dis. 2019 Aug 30;69(6):963-969. doi: 10.1093/cid/ciy1000.


Evaluation of Simplexa Group A Strep Direct Kit Compared to Hologic Group A Streptococcal Direct Assay for Detection of Group A Streptococcus in Throat Swabs.

Church DL, Lloyd T, Larios O, Gregson DB.

J Clin Microbiol. 2018 Feb 22;56(3). pii: e01666-17. doi: 10.1128/JCM.01666-17. Print 2018 Mar.


Rates of colonization with extended-spectrum β-lactamase-producing Escherichia coli in Canadian travellers returning from South Asia: a cross-sectional assessment.

Peirano G, Gregson DB, Kuhn S, Vanderkooi OG, Nobrega DB, Pitout JDD.

CMAJ Open. 2017 Dec 13;5(4):E850-E855. doi: 10.9778/cmajo.20170041. Epub 2017 Dec 15.


Safety-Net Academic Hospital Experience in Following Up Noncritical Yet Potentially Significant Radiologist Recommendations.

Kadom N, Doherty G, Solomon A, Close M, Friedman S, Gregson D, Rostad BS, Moses JM, Norbash A.

AJR Am J Roentgenol. 2017 Nov;209(5):982-986. doi: 10.2214/AJR.17.18179. Epub 2017 Aug 4.


The epidemiology of Staphylococcus aureus carriage in patients attending inner city sexually transmitted infections and community clinics in Calgary, Canada.

Ugarte Torres A, Chu A, Read R, MacDonald J, Gregson D, Louie T, Delongchamp J, Ward L, McClure J, Zhang K, Conly J.

PLoS One. 2017 May 25;12(5):e0178557. doi: 10.1371/journal.pone.0178557. eCollection 2017.


Remote transient Lactobacillus animalis bacteremia causing prosthetic hip joint infection: a case report.

Somayaji R, Lynch T, Powell JN, Gregson D.

BMC Infect Dis. 2016 Nov 4;16(1):634.


The Validation of a Novel Surveillance System for Monitoring Bloodstream Infections in the Calgary Zone.

Leal JR, Gregson DB, Church DL, Henderson EA, Ross T, Laupland KB.

Can J Infect Dis Med Microbiol. 2016;2016:2935870. doi: 10.1155/2016/2935870. Epub 2016 Jun 7.


Molecular Evolution of a Klebsiella pneumoniae ST278 Isolate Harboring blaNDM-7 and Involved in Nosocomial Transmission.

Lynch T, Chen L, Peirano G, Gregson DB, Church DL, Conly J, Kreiswirth BN, Pitout JD.

J Infect Dis. 2016 Sep 1;214(5):798-806. doi: 10.1093/infdis/jiw240. Epub 2016 Jun 9.


Development and Validation of a PCR Assay To Detect the Prairie Epidemic Strain of Pseudomonas aeruginosa from Patients with Cystic Fibrosis.

Workentine M, Poonja A, Waddell B, Duong J, Storey DG, Gregson D, Somayaji R, Rabin HR, Surette MG, Parkins MD.

J Clin Microbiol. 2016 Feb;54(2):489-91. doi: 10.1128/JCM.02603-15. Epub 2015 Dec 9.


Molecular Characterization by Using Next-Generation Sequencing of Plasmids Containing blaNDM-7 in Enterobacteriaceae from Calgary, Canada.

Chen L, Peirano G, Lynch T, Chavda KD, Gregson DB, Church DL, Conly J, Kreiswirth BN, Pitout JD.

Antimicrob Agents Chemother. 2015 Dec 7;60(3):1258-63. doi: 10.1128/AAC.02661-15.


Development and validation of a Pneumocystis jirovecii real-time polymerase chain reaction assay for diagnosis of Pneumocystis pneumonia.

Church DL, Ambasta A, Wilmer A, Williscroft H, Ritchie G, Pillai DR, Champagne S, Gregson DG.

Can J Infect Dis Med Microbiol. 2015 Sep-Oct;26(5):263-7.


Lyme disease: How reliable are serologic results?

Gregson D, Evans G, Patrick D, Bowie W.

CMAJ. 2015 Nov 3;187(16):1193-1194. doi: 10.1503/cmaj.150874. Epub 2015 Aug 31. No abstract available.


Validity of calendar day-based definitions for community-onset bloodstream infections.

Laupland KB, Gregson DB, Church DL.

BMC Res Notes. 2015 Apr 2;8:123. doi: 10.1186/s13104-015-1051-x.


Community-associated methicillin-resistant Staphylococcus aureus necrotizing pneumonia without evidence of antecedent viral upper respiratory infection.

Toro CM, Janvier J, Zhang K, Fonseca K, Gregson D, Church D, Laupland K, Rabin H, Elsayed S, Conly J.

Can J Infect Dis Med Microbiol. 2014 May;25(3):e76-82.


Incidence, risk factors, and outcomes for Enterococcus spp. blood stream infections: a population-based study.

Billington EO, Phang SH, Gregson DB, Pitout JD, Ross T, Church DL, Laupland KB, Parkins MD.

Int J Infect Dis. 2014 Sep;26:76-82. doi: 10.1016/j.ijid.2014.02.012. Epub 2014 May 9.


Bloodstream infections due to Peptoniphilus spp.: report of 15 cases.

Brown K, Church D, Lynch T, Gregson D.

Clin Microbiol Infect. 2014 Nov;20(11):O857-60. doi: 10.1111/1469-0691.12657. Epub 2014 Jun 14.


Pilot testing of an out-of-country medical care questionnaire with screening and cost analysis of preemptive isolation for carbapenem-resistant Enterobacteriaceae in a large Canadian health region.

Rajapakse N, Vayalumkal J, Lam-Li D, Pearce C, Rees G, Kamhuka L, Peirano G, Pidhorney C, Ledgerwood D, Alfieri N, Hope K, Gregson D, Pitout J, Louie T, Conly J.

Infect Control Hosp Epidemiol. 2014 Apr;35(4):450-1. doi: 10.1086/675616. No abstract available.


Population-based surveillance for hypermucoviscosity Klebsiella pneumoniae causing community-acquired bacteremia in Calgary, Alberta.

Peirano G, Pitout JD, Laupland KB, Meatherall B, Gregson DB.

Can J Infect Dis Med Microbiol. 2013 Fall;24(3):e61-4.


Discordant diagnosis of malaria in a family of child refugees from Sierra Leone.

Yanow SK, Gregson D, Chawla R.

Can J Infect Dis Med Microbiol. 2013 Spring;24(1):e22-3.


Fever, headache, fatigue and chancre in a traveller returning from Tanzania.

Davis J, Chaubey V, Warren R, Parkins M, Louie M, Gregson D, Sabuda D, Kuhn S.

Can J Infect Dis Med Microbiol. 2012 Fall;23(3):108-9. No abstract available.


Incidence, risk factors, and outcomes of Fusobacterium species bacteremia.

Afra K, Laupland K, Leal J, Lloyd T, Gregson D.

BMC Infect Dis. 2013 Jun 5;13:264. doi: 10.1186/1471-2334-13-264.


Population-based laboratory surveillance of imported malaria in metropolitan Calgary, 2000-2011.

Lee CS, Gregson DB, Church D, Laupland KB, Eckhardt R, Ross T, Chan W, Pillai DR.

PLoS One. 2013 Apr 15;8(4):e60751. doi: 10.1371/journal.pone.0060751. Print 2013.


Population-based assessment of the incidence, risk factors, and outcomes of anaerobic bloodstream infections.

Ngo JT, Parkins MD, Gregson DB, Pitout JD, Ross T, Church DL, Laupland KB.

Infection. 2013 Feb;41(1):41-8. doi: 10.1007/s15010-012-0389-4. Epub 2013 Jan 5.


Staphylococcus aureus bloodstream infections in children: A population-based assessment.

Vanderkooi OG, Gregson DB, Kellner JD, Laupland KB.

Paediatr Child Health. 2011 May;16(5):276-80.


The distinct category of healthcare associated bloodstream infections.

Lenz R, Leal JR, Church DL, Gregson DB, Ross T, Laupland KB.

BMC Infect Dis. 2012 Apr 9;12:85. doi: 10.1186/1471-2334-12-85.


Population-based laboratory assessment of the burden of community-onset bloodstream infection in Victoria, Canada.

Laupland KB, Kibsey PC, Gregson DB, Galbraith JC.

Epidemiol Infect. 2013 Jan;141(1):174-80. doi: 10.1017/S0950268812000428. Epub 2012 Mar 15.


A case of acute cholecystitis caused by methicillin-resistant Staphylococcus aureus in an immunocompromised patient.

Kim J, Gregson DB, Church DL.

Can J Infect Dis Med Microbiol. 2011 Spring;22(1):e7-9.


Molecular epidemiology over an 11-year period (2000 to 2010) of extended-spectrum β-lactamase-producing Escherichia coli causing bacteremia in a centralized Canadian region.

Peirano G, van der Bij AK, Gregson DB, Pitout JD.

J Clin Microbiol. 2012 Feb;50(2):294-9. doi: 10.1128/JCM.06025-11. Epub 2011 Dec 7.


The persisting burden of invasive pneumococcal disease in HIV patients: an observational cohort study.

Siemieniuk RA, Gregson DB, Gill MJ.

BMC Infect Dis. 2011 Nov 11;11:314. doi: 10.1186/1471-2334-11-314.


Colonization of returning travelers with CTX-M-producing Escherichia coli.

Peirano G, Laupland KB, Gregson DB, Pitout JD.

J Travel Med. 2011 Sep-Oct;18(5):299-303. doi: 10.1111/j.1708-8305.2011.00548.x. Epub 2011 Aug 15.


Risk factors for recurrence and death after bacteraemia: a population-based study.

Jensen US, Knudsen JD, Wehberg S, Gregson DB, Laupland KB.

Clin Microbiol Infect. 2011 Aug;17(8):1148-54. doi: 10.1111/j.1469-0691.2011.03587.x. Epub 2011 Jun 29.


Long-term mortality associated with community-onset bloodstream infection.

Laupland KB, Svenson LW, Gregson DB, Church DL.

Infection. 2011 Oct;39(5):405-10. doi: 10.1007/s15010-011-0149-x. Epub 2011 Jun 25.


Identification by 16S rRNA gene sequencing of Negativicoccus succinicivorans recovered from the blood of a patient with hemochromatosis and pancreatitis.

Church DL, Simmon KE, Sporina J, Lloyd T, Gregson DB.

J Clin Microbiol. 2011 Aug;49(8):3082-4. doi: 10.1128/JCM.01913-10. Epub 2011 Jun 8.


Evaluation of automated repetitive-sequence-based PCR (DiversiLab) compared to PCR ribotyping for rapid molecular typing of community- and nosocomial-acquired Clostridium difficile.

Church DL, Chow BL, Lloyd T, Gregson DB.

Diagn Microbiol Infect Dis. 2011 Jun;70(2):183-90. doi: 10.1016/j.diagmicrobio.2010.12.024.


Evaluation of the Xpert® group B streptococcus real-time polymerase chain reaction assay compared to StrepB Carrot Broth™ for the rapid intrapartum detection of group B streptococcus colonization.

Church DL, Baxter H, Lloyd T, Miller B, Gregson DB.

Diagn Microbiol Infect Dis. 2011 Apr;69(4):460-2. doi: 10.1016/j.diagmicrobio.2010.11.002.


Comparison of automated repetitive-sequence-based polymerase chain reaction and spa typing versus pulsed-field gel electrophoresis for molecular typing of methicillin-resistant Staphylococcus aureus.

Church DL, Chow BL, Lloyd T, Gregson DB.

Diagn Microbiol Infect Dis. 2011 Jan;69(1):30-7. doi: 10.1016/j.diagmicrobio.2010.09.010.


Immunoglobulin A-dominant postinfectious glomerulonephritis: frequent occurrence in nondiabetic patients with Staphylococcus aureus infection.

Worawichawong S, Girard L, Trpkov K, Gough JC, Gregson DB, Benediktsson H.

Hum Pathol. 2011 Feb;42(2):279-84. doi: 10.1016/j.humpath.2010.07.009. Epub 2010 Nov 26.


Comparison of the RealTime HIV-1, COBAS TaqMan 48 v1.0, Easy Q v1.2, and Versant v3.0 assays for determination of HIV-1 viral loads in a cohort of Canadian patients with diverse HIV subtype infections.

Church D, Gregson D, Lloyd T, Klein M, Beckthold B, Laupland K, Gill MJ.

J Clin Microbiol. 2011 Jan;49(1):118-24. doi: 10.1128/JCM.00685-10. Epub 2010 Nov 17.


Human granulocytic anaplasmosis: First reported case in Canada.

Parkins MD, Church DL, Jiang XY, Gregson DB.

Can J Infect Dis Med Microbiol. 2009 Fall;20(3):e100-2.


Time to blood culture positivity in Staphylococcus aureus bacteremia: association with 30-day mortality.

Kim J, Gregson DB, Ross T, Laupland KB.

J Infect. 2010 Sep;61(3):197-204. doi: 10.1016/j.jinf.2010.06.001. Epub 2010 Jun 12.


Development of a novel electronic surveillance system for monitoring of bloodstream infections.

Leal J, Gregson DB, Ross T, Flemons WW, Church DL, Laupland KB.

Infect Control Hosp Epidemiol. 2010 Jul;31(7):740-7. doi: 10.1086/653207.


Clinical outcome of empiric antimicrobial therapy of bacteremia due to extended-spectrum beta-lactamase producing Escherichia coli and Klebsiella pneumoniae.

Chaubey VP, Pitout JD, Dalton B, Ross T, Church DL, Gregson DB, Laupland KB.

BMC Res Notes. 2010 Apr 27;3:116. doi: 10.1186/1756-0500-3-116.


McKay agar enables routine quantification of the 'Streptococcus milleri' group in cystic fibrosis patients.

Sibley CD, Grinwis ME, Field TR, Parkins MD, Norgaard JC, Gregson DB, Rabin HR, Surette MG.

J Med Microbiol. 2010 May;59(Pt 5):534-40. doi: 10.1099/jmm.0.016592-0. Epub 2010 Jan 21.


Population-based study of the epidemiology and the risk factors for Pseudomonas aeruginosa bloodstream infection.

Parkins MD, Gregson DB, Pitout JD, Ross T, Laupland KB.

Infection. 2010 Feb;38(1):25-32. doi: 10.1007/s15010-009-9145-9. Epub 2009 Dec 12.


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