CCDR: Volume 47-4, April 2021: COVID-19: A Year Later

CCDR

Table of contents

Diagnostic testing
Practical guidance for clinical laboratories for SARS-CoV-2 serology testing
CL Charlton, JN Kanji, V Tran, JV Kus, J Gubbay, C Osiowy, JL Robinson, I Sekirov, M Drebot, T Hatchette, DR Stein, N El-Gabalawy, A Lang, L Jiao, PN Levett, H Wood, C Therrien, LR Lindsay, M Morshed, JD Forbes, A Dibernardo on behalf of the Canadian Public Health Laboratory Network (CPHLN) Serology Working Group

Scientific modelling
Simple mathematical modelling approaches to assessing the transmission risk of SARS-CoV-2 at gatherings
D Champredon, A Fazil, NH Ogden

Rapid communication
Serum antibody response in COVID-19-recovered patients who retested positive
N Atchessi, M Striha, R Edjoc, C Abalos, A Lien, L Waddell, I Gabrani-Juma, E Thompson, T Dawson

Epidemiologic study
Rapid disappearance of influenza following the implementation of COVID-19 mitigation measures in Hamilton, Ontario
K Zhang, A Misra, PJ Kim, SM Moghadas, JM Langley, M Smieja

Surveillance
Suboptimal prenatal screening of Chlamydia trachomatis and Neisseria gonorrhoeae infections in a Montréal birthing and tertiary care centre: A retrospective cohort study
V Ivensky, R Mandel, AC Boulay, C Lavallée, J Benoît, AC Labbé

Outbreak
COVID-19 outbreak in a personal service setting in Kingston, Ontario, 2020
A Li, S Parent, A Kasmani, TH Guan, K Moore

An outbreak of hepatitis C virus attributed to the use of multi-dose vials at a colonoscopy clinic, Waterloo Region, Ontario
A Folkema, HL Wang, K Wright, MM Hirji, A Andonov, K Bromley, C Ludwig, A MacArthur

Series
The National Collaborating Centre for Healthy Public Policy in times of COVID-19: Building skills to “Build Back Better”
O Bellefleur, M Jacques

Ethics check-up of public health immunization programs in Canada
NE MacDonald, S Harmon, JE Graham

COVID brief
Protective immunity post-COVID-19 infection

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