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The evolving nature of Bordetella pertussis in Ontario, Canada, 2009-2017: strains with shifting genotypes and pertactin deficiency.

Tsang RSW, Shuel M, Cronin K, Deng S, Whyte K, Marchand-Austin A, Ma J, Bolotin S, Crowcroft N, Schwartz K, Van Domselaar G, Graham M, Jamieson FB.

Can J Microbiol. 2019 Jul 11:1-8. doi: 10.1139/cjm-2019-0128. [Epub ahead of print]


Increase in ST-11 serogroup W Neisseria meningitidis invasive meningococcal disease in Canada, 2016-2018.

Tsang RS, Hoang L, Tyrrell GJ, Minion J, Van Caeseele P, Kus JV, Lefebvre B, Haldane D, Garceau R, German G, Zahariadis G, Hanley B.

Can Commun Dis Rep. 2019 Jun 6;45(6):164-169. doi: 10.14745/ccdr.v45i06a04. eCollection 2019 Jun 6.


WGS analysis of a penicillin-resistant Neisseria meningitidis strain containing a chromosomal ROB-1 β-lactamase gene.

Tsang RSW, Ahmad T, Jamieson FB, Tyrrell GJ.

J Antimicrob Chemother. 2019 Jan 1;74(1):22-28. doi: 10.1093/jac/dky391.


Characterization of natural bactericidal antibody against Haemophilus influenzae type a in Canadian First Nations: A Canadian Immunization Research Network (CIRN) Clinical Trials Network (CTN) study.

Nix EB, Choi J, Anthes C, Gaultier GN, Thorgrimson J, Cox AD, Tsang RSW, McCready WG, Boreham D, Ulanova M.

PLoS One. 2018 Aug 15;13(8):e0201282. doi: 10.1371/journal.pone.0201282. eCollection 2018.


Molecular Typing and Macrolide Resistance of Syphilis Cases in Manitoba, Canada, From 2012 to 2016.

Shuel M, Hayden K, Kadkhoda K, Tsang RSW.

Sex Transm Dis. 2018 Apr;45(4):233-236. doi: 10.1097/OLQ.0000000000000734.


Whole genome typing of the recently emerged Canadian serogroup W Neisseria meningitidis sequence type 11 clonal complex isolates associated with invasive meningococcal disease.

Tsang RSW, Ahmad T, Tyler S, Lefebvre B, Deeks SL, Gilca R, Hoang L, Tyrrell G, Van Caeseele P, Van Domselaar G, Jamieson FB.

Int J Infect Dis. 2018 Apr;69:55-62. doi: 10.1016/j.ijid.2018.01.019. Epub 2018 Feb 4.


Epidemiology of invasive pneumococcal and Haemophilus influenzae diseases in Northwestern Ontario, Canada, 2010-2015.

Eton V, Schroeter A, Kelly L, Kirlew M, Tsang RSW, Ulanova M.

Int J Infect Dis. 2017 Dec;65:27-33. doi: 10.1016/j.ijid.2017.09.016. Epub 2017 Sep 22.


The changing epidemiology of invasive Haemophilus influenzae disease: Emergence and global presence of serotype a strains that may require a new vaccine for control.

Tsang RSW, Ulanova M.

Vaccine. 2017 Jul 24;35(33):4270-4275. doi: 10.1016/j.vaccine.2017.06.001. Epub 2017 Jun 27.


The Kids Insight into Dementia Survey (KIDS): development and preliminary psychometric properties.

Baker JR, Low LF, Goodenough B, Jeon YH, Tsang RSM, Bryden C, Hutchinson K.

Aging Ment Health. 2018 Aug;22(8):947-953. doi: 10.1080/13607863.2017.1320703. Epub 2017 May 8.


Discordant Effects of Licensed Meningococcal Serogroup B Vaccination on Invasive Disease and Nasal Colonization in a Humanized Mouse Model.

Buckwalter CM, Currie EG, Tsang RSW, Gray-Owen SD.

J Infect Dis. 2017 May 15;215(10):1590-1598. doi: 10.1093/infdis/jix162.


Paediatric meningococcaemia in northwestern Ontario, Canada: a case for publicly funded meningococcal B vaccination.

Eton V, Tsang RS, Ulanova M.

JMM Case Rep. 2016 Feb 6;3(1):e005017. doi: 10.1099/jmmcr.0.005017. eCollection 2016 Feb.


A non-healing syphilid: Another face of the great imitator.

Anid G, Isaac M, Penner CR, Van Caeseele P, Tsang RS, Kadkhoda K.

IDCases. 2017 Feb 11;8:14-16. doi: 10.1016/j.idcr.2017.02.005. eCollection 2017.


Characteristics of invasive Haemophilus influenzae serotype a (Hia) from Nunavik, Canada and comparison with Hia strains in other North American Arctic regions.

Tsang RSW, Proulx JF, Hayden K, Shuel M, Lefebvre B, Boisvert AA, Moore D.

Int J Infect Dis. 2017 Apr;57:104-107. doi: 10.1016/j.ijid.2017.02.003. Epub 2017 Feb 14.


Short-Read Whole-Genome Sequencing for Laboratory-Based Surveillance of Bordetella pertussis.

Marchand-Austin A, Tsang RSW, Guthrie JL, Ma JH, Lim GH, Crowcroft NS, Deeks SL, Farrell DJ, Jamieson FB.

J Clin Microbiol. 2017 May;55(5):1446-1453. doi: 10.1128/JCM.02436-16. Epub 2017 Feb 22.


Ciprofloxacin-resistant Neisseria meningitidis in Canada: likely imported strains.

Tsang RS, Law DK, Deng S, Hoang L.

Can J Microbiol. 2017 Mar;63(3):265-268. doi: 10.1139/cjm-2016-0716. Epub 2017 Jan 5.


Antibiotic susceptibility and molecular analysis of invasive Haemophilus influenzae in Canada, 2007 to 2014.

Tsang RSW, Shuel M, Whyte K, Hoang L, Tyrrell G, Horsman G, Wylie J, Jamieson F, Lefebvre B, Haldane D, Gad RR, German GJ, Needle R.

J Antimicrob Chemother. 2017 May 1;72(5):1314-1319. doi: 10.1093/jac/dkw565.


Systematic review and meta-analysis of genetic studies of late-life depression.

Tsang RS, Mather KA, Sachdev PS, Reppermund S.

Neurosci Biobehav Rev. 2017 Apr;75:129-139. doi: 10.1016/j.neubiorev.2017.01.028. Epub 2017 Jan 27. Review.


Invasive serogroup W Neisseria meningitidis (MenW) in Ontario, Canada shows potential clonal replacement during the period January 1, 2009 to June 30, 2016.

Tsang RS, Deeks SL, Wong K, Marchand-Austin A, Jamieson FB.

Can Commun Dis Rep. 2016 Dec 1;42(12):263-266. eCollection 2016 Dec 1.


Antigenic and genetic characterization of Bordetella pertussis recovered from Quebec, Canada, 2002-2014: detection of a genetic shift.

Shuel M, Lefebvre B, Whyte K, Hayden K, De Serres G, Brousseau N, Tsang RS.

Can J Microbiol. 2016 May;62(5):437-41. doi: 10.1139/cjm-2015-0781. Epub 2016 Jan 14.


Laboratory characterization of invasive Haemophilus influenzae isolates from Nunavut, Canada, 2000-2012.

Tsang RS, Li YA, Mullen A, Baikie M, Whyte K, Shuel M, Tyrrell G, Rotondo JA, Desai S, Spika J.

Int J Circumpolar Health. 2016 Jan 12;75:29798. doi: 10.3402/ijch.v75.29798. eCollection 2016.


Typing of Neisseria meningitidis by whole-genome analysis.

Tsang RS.

Lancet Infect Dis. 2015 Dec;15(12):1366-7. doi: 10.1016/S1473-3099(15)00297-2. Epub 2015 Oct 27. No abstract available.


Genomic resolution of an aggressive, widespread, diverse and expanding meningococcal serogroup B, C and W lineage.

Lucidarme J, Hill DM, Bratcher HB, Gray SJ, du Plessis M, Tsang RS, Vazquez JA, Taha MK, Ceyhan M, Efron AM, Gorla MC, Findlow J, Jolley KA, Maiden MC, Borrow R.

J Infect. 2015 Nov;71(5):544-52. doi: 10.1016/j.jinf.2015.07.007. Epub 2015 Jul 28.


Tonsillar Syphilis: an Unusual Site of Infection Detected by Treponema pallidum PCR.

Smith JR, Tsang RS, Kadkhoda K.

J Clin Microbiol. 2015 Sep;53(9):3089-91. doi: 10.1128/JCM.01634-15. Epub 2015 Jul 15.


Delay in diagnosis of severe food protein-induced enterocolitis syndrome caused by mango.

Ta V, Tsang RS, Mannino Avila E, Ann Leonard S.

Ann Allergy Asthma Immunol. 2015 Aug;115(2):157-8. doi: 10.1016/j.anai.2015.05.022. Epub 2015 Jun 18. No abstract available.


Canadian Public Health Laboratory Network laboratory guidelines for the use of serological tests (excluding point-of-care tests) for the diagnosis of syphilis in Canada.

Levett PN, Fonseca K, Tsang RS, Kadkhoda K, Serhir B, Radons SM, Morshed M.

Can J Infect Dis Med Microbiol. 2015 Jan-Feb;26 Suppl A:6A-12A.


Canadian Public Health Laboratory Network national syphilis laboratory testing recommendations: INTRODUCTION.

Members of the Canadian Public Health Laboratory Network Syphilis Laboratory Task Group during authorship (co-chairs and membership in alphabetical order), Tsang RS, Morshed M, Allen V, Chernesky MA, Fonseca K, Garceau R, Jayaraman GC, Kadkhoda K, Lee BE, Levett PN, Radons SM, Serhir B, Singh AE, Wong T.

Can J Infect Dis Med Microbiol. 2015 Jan-Feb;26 Suppl A:4A-5A. No abstract available.


Canadian Public Health Laboratory Network laboratory guidelines for the use of direct tests to detect syphilis in Canada.

Tsang RS, Morshed M, Chernesky MA, Jayaraman GC, Kadkhoda K.

Can J Infect Dis Med Microbiol. 2015 Jan-Feb;26 Suppl A:13A-7A.


Genetic and antigenic characterization of Canadian invasive Neisseria meningitidis serogroup C (MenC) case isolates in the post-MenC conjugate vaccine era, 2009-2013.

Tsang RS, Hoang L, Tyrrell G, Horsman G, Wylie J, Jamieson FB, Lefebvre B, Taha MK.

J Med Microbiol. 2015 Feb;64(Pt 2):174-9. doi: 10.1099/jmm.0.000006-0. Erratum in: J Med Microbiol. 2015 May;64(Pt 5):586.


Pertactin-negative Bordetella pertussis strains in Canada: characterization of a dozen isolates based on a survey of 224 samples collected in different parts of the country over the last 20 years.

Tsang RS, Shuel M, Jamieson FB, Drews S, Hoang L, Horsman G, Lefebvre B, Desai S, St-Laurent M.

Int J Infect Dis. 2014 Nov;28:65-9. doi: 10.1016/j.ijid.2014.08.002. Epub 2014 Sep 22.


Determination of serotyping antigens, clonal analysis and genetic characterization of the 4CMenB vaccine antigen genes in invasive Neisseria meningitidis from Western Canada, 2009 to 2013.

Law DK, Zhou J, Deng S, Hoang L, Tyrrell G, Horsman G, Wylie J, Tsang RS.

J Med Microbiol. 2014 Nov;63(Pt 11):1490-9. doi: 10.1099/jmm.0.079921-0. Epub 2014 Aug 27.


Study protocol of the Going to Stay at Home program: evaluation of a residential carer training program to reduce dementia carer distress and burden.

Gresham M, Tsang RS, Heffernan M, Brodaty H.

Springerplus. 2014 Jul 1;3:330. doi: 10.1186/2193-1801-3-330. eCollection 2014.


Global population structure and evolution of Bordetella pertussis and their relationship with vaccination.

Bart MJ, Harris SR, Advani A, Arakawa Y, Bottero D, Bouchez V, Cassiday PK, Chiang CS, Dalby T, Fry NK, Gaillard ME, van Gent M, Guiso N, Hallander HO, Harvill ET, He Q, van der Heide HG, Heuvelman K, Hozbor DF, Kamachi K, Karataev GI, Lan R, Lutyńska A, Maharjan RP, Mertsola J, Miyamura T, Octavia S, Preston A, Quail MA, Sintchenko V, Stefanelli P, Tondella ML, Tsang RS, Xu Y, Yao SM, Zhang S, Parkhill J, Mooi FR.

MBio. 2014 Apr 22;5(2):e01074. doi: 10.1128/mBio.01074-14.


Differential susceptibility of invasive Haemophilus influenzae serotype a and serotype b to ampicillin and other commonly prescribed antibiotics.

Shuel M, Whyte K, Drew T, Wylie J, Lefebvre B, Hoang L, Tsang RS.

Lett Appl Microbiol. 2014 Aug;59(2):193-9. doi: 10.1111/lam.12265. Epub 2014 Apr 28.


Letter to the editor.

Tsang RS, Jamieson FB, Lefebvre B, Gilca R.

Can J Infect Dis Med Microbiol. 2014 Spring;25(1):8-38. No abstract available.


A review of invasive Haemophilus influenzae disease in the Indigenous populations of North America.

Tsang RS, Bruce MG, Lem M, Barreto L, Ulanova M.

Epidemiol Infect. 2014 Jul;142(7):1344-54. doi: 10.1017/S0950268814000405. Epub 2014 Mar 5. Review.


Letter to the editor.

Shuel M, Tsang RS.

Can J Infect Dis Med Microbiol. 2013 Winter;24(4):239-40. No abstract available.


Sydney Memory and Ageing Study: an epidemiological cohort study of brain ageing and dementia.

Tsang RS, Sachdev PS, Reppermund S, Kochan NA, Kang K, Crawford J, Wen W, Draper B, Trollor JN, Slavin MJ, Mather KA, Assareh A, Seeher KM, Brodaty H.

Int Rev Psychiatry. 2013 Dec;25(6):711-25. doi: 10.3109/09540261.2013.860890.


Emergence of non-serotype b encapsulated Haemophilus influenzae as a cause of pediatric meningitis in northwestern Ontario.

Sadeghi-Aval P, Tsang RS, Jamieson FB, Ulanova M.

Can J Infect Dis Med Microbiol. 2013 Spring;24(1):13-6.


Haemophilus influenzae serotype a as a cause of serious invasive infections.

Ulanova M, Tsang RSW.

Lancet Infect Dis. 2014 Jan;14(1):70-82. doi: 10.1016/S1473-3099(13)70170-1. Epub 2013 Nov 20. Review.


Challenges and opportunities for bacterial vaccine development in the 21(st) century.

Duvvuri VR, Barreto L, Wu J, Tsang RS.

Curr Pharm Biotechnol. 2013;14(8):758-67. Review.


Clinical prediction and diagnosis of neurosyphilis in HIV-infected patients with early Syphilis.

Dumaresq J, Langevin S, Gagnon S, Serhir B, Deligne B, Tremblay C, Tsang RS, Fortin C, Coutlée F, Roger M.

J Clin Microbiol. 2013 Dec;51(12):4060-6. doi: 10.1128/JCM.01989-13. Epub 2013 Oct 2.


Homologous recombination drives both sequence diversity and gene content variation in Neisseria meningitidis.

Kong Y, Ma JH, Warren K, Tsang RS, Low DE, Jamieson FB, Alexander DC, Hao W.

Genome Biol Evol. 2013;5(9):1611-27. doi: 10.1093/gbe/evt116.


Population genetics of Haemophilus influenzae serotype a in three Canadian provinces.

Tsang RS, Shuel M, Wylie J, Lefebvre B, Hoang L, Law DK.

Can J Microbiol. 2013 May;59(5):362-4. doi: 10.1139/cjm-2013-0156. Epub 2013 Apr 12.


Real-time polymerase chain reaction for detection of encapsulated Haemophilus influenzae using degenerate primers to target the capsule transport gene bexA.

Law DK, Tsang RS.

Can J Microbiol. 2013 May;59(5):359-61. doi: 10.1139/cjm-2013-0040. Epub 2013 Mar 27.


Genetic analysis of Bordetella pertussis in Ontario, Canada reveals one predominant clone.

Shuel M, Jamieson FB, Tang P, Brown S, Farrell D, Martin I, Stoltz J, Tsang RS.

Int J Infect Dis. 2013 Jun;17(6):e413-7. doi: 10.1016/j.ijid.2012.12.015. Epub 2013 Jan 24.


Identification and proposal of a potentially new clonal complex that is a common cause of MenB disease in Central and Eastern Canada.

Tsang RS, Lefebvre B, Jamieson FB, Gilca R, Deeks SL, Zhou J.

Can J Microbiol. 2012 Oct;58(10):1236-40. doi: 10.1139/w2012-103. Epub 2012 Oct 10.


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