Surveillance for Lyme disease in Canada: 2009-2015

Canada Communicable Disease Report = Relevé Des Maladies Transmissibles Au Canada
S GasmiJ K Koffi

Abstract

To summarize seven years of surveillance data for Lyme disease cases reported in Canada from 2009 to 2015. We describe the incidence over time, seasonal and geographic distribution, demographic and clinical characteristics of reported Lyme disease cases. Logistic regression was used to explore differences between age groups, sex and year to better understand potential demographic risk factors for the occurrence of Lyme disease. The number of reported Lyme disease cases increased more than six-fold, from 144 in 2009 to 917 in 2015, mainly due to an increase in infections acquired in Canada. Most locally acquired cases were reported between May and November. An increase in incidence of Lyme disease was observed in provinces from Manitoba eastwards. This is consistent with our knowledge of range expansion of the tick vectors in this region. In the western provinces the incidence has remained low and stable. All cases reported by Alberta, Saskatchewan and Newfoundland and Labrador were acquired outside of the province, either elsewhere in Canada or abroad. There was a bimodal distribution for Lyme disease by age with peaks at 5-9 and 45-74 years of age. The most common presenting symptom was a single erythema migrans rash (74.2%) a...Continue Reading

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Citations

May 31, 2019·American Journal of Epidemiology·Ilya R FischhoffRichard S Ostfeld
Mar 13, 2020·Frontiers in Medicine·Alison W Rebman, John N Aucott
Oct 14, 2018·International Journal of Environmental Research and Public Health·Erin SchillbergKit Ngan Young Hoon
May 6, 2019·International Journal of Environmental Research and Public Health·Mario Levesque, Matthew Klohn
Aug 11, 2019·Healthcare·Emilie M GaudetVett Lloyd
Jun 30, 2019·BMC Public Health·N H OgdenD Webster
Dec 7, 2019·Journal of Medical Entomology·Susan P EliasRobert P Smith
Oct 17, 2019·Journal of Medical Entomology·Neil B ChiltonShaun J Dergousoff
Sep 10, 2020·Healthcare·Ally G Rogerson, Vett K Lloyd
Jan 10, 2021·Journal of Veterinary Internal Medicine·Grace K NicholKatie M Clow
Jan 29, 2021·Clinical Microbiology Reviews·John A Branda, Allen C Steere
Mar 22, 2021·Parasites & Vectors·Cindy BregnardMaarten Jeroen Voordouw
Jul 18, 2021·Transfusion·Sheila F O'BrienGilles Delage
Jul 1, 2021·Applied and Environmental Microbiology·Phineas T HamiltonMaarten J Voordouw

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