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Walter Demczuk
Researcher at Public Health Agency of Canada
Publications - 80
Citations - 2854
Walter Demczuk is an academic researcher from Public Health Agency of Canada. The author has contributed to research in topics: Streptococcus pneumoniae & Serotype. The author has an hindex of 24, co-authored 65 publications receiving 2140 citations. Previous affiliations of Walter Demczuk include St. John's University & National Microbiology Laboratory.
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Journal ArticleDOI
Ceftiofur resistance in Salmonella enterica serovar Heidelberg from chicken meat and humans, Canada.
Lucie Dutil,Rebecca Irwin,Rita Finley,Lai King Ng,Brent P. Avery,Patrick Boerlin,Anne Marie Bourgault,Linda Cole,Danielle Daignault,Andrea Desruisseau,Walter Demczuk,Linda Hoang,Greg B. Horsman,Johanne Ismail,Frances B. Jamieson,Anne Maki,Ana Pacagnella,Dylan R Pillai +17 more
TL;DR: Use of this drug in chickens may limit effectiveness of cephalosporins in treating human infections.
Journal ArticleDOI
Changes in the incidence of invasive disease due to Streptococcus pneumoniae, Haemophilus influenzae, and Neisseria meningitidis during the COVID-19 pandemic in 26 countries and territories in the Invasive Respiratory Infection Surveillance Initiative: a prospective analysis of surveillance data.
Angela B. Brueggemann,Melissa J. Jansen van Rensburg,David Shaw,Noel D. McCarthy,Keith A. Jolley,Martin C. J. Maiden,Mark van der Linden,Zahin Amin-Chowdhury,Desiree E. Bennett,Ray Borrow,Maria Cristina C. Brandileone,Karen Broughton,Ruth Campbell,Bin Cao,Carlo Casanova,Eun Hwa Choi,Yiu Wai Chu,Stephen Clark,Heike Claus,Juliana Coelho,Mary Corcoran,Mary Corcoran,Simon Cottrell,Robert Cunney,Robert Cunney,Tine Dalby,Heather Davies,Linda de Gouveia,Ala Eddine Deghmane,Walter Demczuk,Stefanie Desmet,Richard J. Drew,Richard J. Drew,Mignon du Plessis,Helga Erlendsdóttir,Norman K. Fry,Kurt Fuursted,Steve J. Gray,Birgitta Henriques-Normark,Thomas Hale,Markus Hilty,Steen Hoffmann,Hilary Humphreys,Margaret Ip,Susanne Jacobsson,Jillian Johnston,Jana Kozakova,Karl G. Kristinsson,Pavla Krizova,Alicja Kuch,Shamez N Ladhani,Thiên Trí Lâm,Vera Lebedova,Laura Lindholm,David Litt,Irene Martin,Delphine Martiny,Wesley Mattheus,Martha McElligott,Mary Meehan,Susan Meiring,Paula Mölling,Eva Morfeldt,Julie Morgan,Robert M. Mulhall,Carmen Muñoz-Almagro,David R. Murdoch,Joy Murphy,Martin Musilek,Alexandre Mzabi,Amaresh Perez-Argüello,Monique Perrin,Malorie Perry,Alba Redin,Richard J. Roberts,Maria Roberts,Assaf Rokney,Merav Ron,Kevin J. Scott,Carmen L. Sheppard,Lotta Siira,Anna Skoczynska,Monica Sloan,Hans Christian Slotved,Andrew Smith,Joon Young Song,Muhamed-Kheir Taha,Maija Toropainen,Dominic N.C. Tsang,Anni Vainio,Nina M. van Sorge,Emmanuelle Varon,Jiri Vlach,Ulrich Vogel,Sandra Vohrnova,Anne von Gottberg,Rosemeire C. Zanella,Fei Zhou +97 more
TL;DR: In this article, the authors investigated the incidence of invasive disease due to these pathogens during the early months of the COVID-19 pandemic and found that containment policies and public information campaigns likely reduced transmission of S pneumoniae, H influenzae, and N meningitidis, leading to a significant reduction in lifethreatening invasive diseases in many countries worldwide.
Journal ArticleDOI
Cooperative Recognition of Internationally Disseminated Ceftriaxone-Resistant Neisseria gonorrhoeae Strain.
Monica M Lahra,Irene Martin,Walter Demczuk,Amy V. Jennison,Ken-ichi Lee,Shu-ichi Nakayama,Brigitte Lefebvre,Jean Longtin,Alison Ward,Michael R. Mulvey,Teodora Wi,Makoto Ohnishi,David M. Whiley +12 more
TL;DR: The results provide further evidence of international transmission of ceftriaxone-resistant N. gonorrhoeae and recommend increasing awareness of international spread of this drug-resistant strain, strengthening surveillance to include identifying treatment failures and contacts, and strengthening international sharing of data.
Journal ArticleDOI
WGS to predict antibiotic MICs for Neisseria gonorrhoeae.
David W Eyre,David W Eyre,Dilrini De Silva,Dilrini De Silva,Kevin Cole,Kevin Cole,Joanna Peters,Joanna Peters,Michelle J Cole,Yonatan H. Grad,Yonatan H. Grad,Walter Demczuk,Irene Martin,Michael R. Mulvey,Derrick W. Crook,Derrick W. Crook,Derrick W. Crook,A. Sarah Walker,A. Sarah Walker,Tim E. A. Peto,Tim E. A. Peto,John Paul,John Paul,John Paul +23 more
TL;DR: A WGS-based MIC prediction approach that allows reliable MIC prediction for five gonorrhoea antimicrobials is demonstrated and should allow reasonably precise prediction of MICs for a range of bacterial species.
Journal ArticleDOI
Neisseria gonorrhoeae Sequence Typing for Antimicrobial Resistance, a Novel Antimicrobial Resistance Multilocus Typing Scheme for Tracking Global Dissemination of N. gonorrhoeae Strains.
Walter Demczuk,S. Sidhu,Magnus Unemo,David M. Whiley,Vanessa Allen,Jo-Anne R. Dillon,Michelle J Cole,Christine Seah,Ella Trembizki,David L. Trees,Ellen N. Kersh,A. J. Abrams,H J C de Vries,A P van Dam,I. Medina,Amrita Bharat,M. R. Mulvey,G. Van Domselaar,Irene Martin +18 more
TL;DR: The standardization of nomenclature associated with antimicrobial resistance determinants through an internationally available database will facilitate the monitoring of the global dissemination of antimicrobial-resistant N. gonorrhoeae strains.