ArticleInfection2022
Escherichia coli sequence type 73 bloodstream infections in a centralized Canadian region and their association with companion animals: an ecological study.
Article in Infection, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
3 authors at 2 institutions in 2 countries.
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Abstract
purposeExtraintestinal pathogenic E. coli (ExPEC) are important pathogens causing community-acquired infections in humans, including bloodstream infections (BSIs), and may also colonize and infect animals. Our aim was to investigate associations between incidence rates (IRs) of BSIs caused by ExPEC and number of dogs and cats in communities in Calgary.
methodsWe used a well-characterized collection of blood isolates (n = 685) from Calgary, Alberta, Canada (2016). We used a combination of a seven-single-nucleotide-polymorphism quantitative PCR to type ExPEC into sequence types (STs). Calgary census data were used to estimate IRs per city community, as well as to investigate associations between number of companion animals per community, as obtained from licensing data, and IR of BSIs caused by each dominant ST.
resultsFrom the 685 isolates available, ExPEC ST131 was most prevalent (21.3% of included isolates), followed by ST73 (13.7%), ST69 (8.2%), ST95 (6.7%), and ST1193 (5.3%), respectively. Incidence of BSIs caused by ExPECs among Calgary residents was 48.8 cases per 100,000 resident-years, whereas communities had on average of 1.7 companion animals per 10 residents. No association between the number of dogs and IR of BSIs caused by ExPECs was detected for any ST. Conversely, the incidence rate of BSIs caused by ST73 was 3.6 times higher (95%CI 1.3-9.99) for every increase of 1 cat per 10 habitants in communities.
conclusionsNumber of cats per habitant was positively associated with the incidence of BSIs caused by ExPEC ST73.
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