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Seroprevalence of pandemic influenza H1N1 in Ontario from January 2009-May 2010.
Achonu C, Rosella L, Gubbay JB, Deeks S, Rebbapragada A, Mazzulli T, Willison D, Foisy J, McGeer A, Johnson I, LaFreniere M, Johnson C, Willmore J, Yue C, Crowcroft NS. Achonu C, et al. Among authors: johnson c, johnson i. PLoS One. 2011;6(11):e26427. doi: 10.1371/journal.pone.0026427. Epub 2011 Nov 14. PLoS One. 2011. PMID: 22110586 Free PMC article.
The epidemiology of travel-related Salmonella Enteritidis in Ontario, Canada, 2010-2011.
Tighe MK, Savage R, Vrbova L, Toolan M, Whitfield Y, Varga C, Lee B, Allen V, Maki A, Walton R, Johnson C, Dhar B, Ahmed R, Crowcroft NS, Middleton D. Tighe MK, et al. Among authors: johnson c. BMC Public Health. 2012 May 18;12:310. doi: 10.1186/1471-2458-12-310. BMC Public Health. 2012. PMID: 22537320 Free PMC article.
Risk factors for sporadic domestically acquired Salmonella serovar Enteritidis infections: a case-control study in Ontario, Canada, 2011.
Middleton D, Savage R, Tighe MK, Vrbova L, Walton R, Whitfield Y, Varga C, Lee B, Rosella L, Dhar B, Johnson C, Ahmed R, Allen VG, Crowcroft NS. Middleton D, et al. Among authors: johnson c. Epidemiol Infect. 2014 Jul;142(7):1411-21. doi: 10.1017/S0950268813001945. Epub 2013 Sep 13. Epidemiol Infect. 2014. PMID: 24029072 Free PMC article.
How well do ICD-9 physician claim diagnostic codes identify confirmed pertussis cases in Alberta, Canada? A Canadian Immunization Research Network (CIRN) Study.
Fathima S, Simmonds KA, Drews SJ, Svenson LW, Kwong JC, Mahmud SM, Quach S, Johnson C, Schwartz KL, Crowcroft NS, Russell ML; Canadian Immunization Research Network (CIRN) Provincial Collaborative Network Vaccine Effectiveness Working Group. Fathima S, et al. Among authors: johnson c. BMC Health Serv Res. 2017 Jul 12;17(1):479. doi: 10.1186/s12913-017-2321-1. BMC Health Serv Res. 2017. PMID: 28701222 Free PMC article.
Methods used for immunization coverage assessment in Canada, a Canadian Immunization Research Network (CIRN) study.
Wilson SE, Quach S, MacDonald SE, Naus M, Deeks SL, Crowcroft NS, Mahmud SM, Tran D, Kwong J, Tu K, Gilbert NL, Johnson C, Desai S. Wilson SE, et al. Among authors: johnson c. Hum Vaccin Immunother. 2017 Aug 3;13(8):1928-1936. doi: 10.1080/21645515.2017.1319022. Epub 2017 Jul 14. Hum Vaccin Immunother. 2017. PMID: 28708945 Free PMC article.
Case-control study of household contacts to examine immunological protection from Bordetella pertussis transmission - study protocol.
Bolotin S, Johnson C, Quach S, Ambrose A, DeCoutere S, Deeks SL, Drews S, Faheem A, Green K, Halperin SA, Hoang L, Jamieson F, Kollmann T, Marchand-Austin A, McCormack D, McGeer A, Murti M, Bba AO, Rebbapragada A, Vanderkooi OG, Wang J, Warshawsky B, Crowcroft NS; Canadian Immunization Research Network Provincial Collaborative Network. Bolotin S, et al. Among authors: johnson c. CMAJ Open. 2017 Dec 19;5(4):E872-E877. doi: 10.9778/cmajo.20170072. CMAJ Open. 2017. PMID: 29269437 Free PMC article.
Under-reporting of pertussis in Ontario: A Canadian Immunization Research Network (CIRN) study using capture-recapture.
Crowcroft NS, Johnson C, Chen C, Li Y, Marchand-Austin A, Bolotin S, Schwartz K, Deeks SL, Jamieson F, Drews S, Russell ML, Svenson LW, Simmonds K, Mahmud SM, Kwong JC. Crowcroft NS, et al. Among authors: johnson c. PLoS One. 2018 May 2;13(5):e0195984. doi: 10.1371/journal.pone.0195984. eCollection 2018. PLoS One. 2018. PMID: 29718945 Free PMC article.
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