Publications by authors named "Justin Carr"
Article Synopsis
- * From 2018 to 2021, ticks were collected and analyzed for the presence of B. odocoilei, revealing a 12% overall prevalence in I. scapularis across central and eastern Canada, with higher rates in specific years.
- * The study highlights the stable establishment of B. odocoilei in tick populations and emphasizes the need for ongoing surveillance to better understand and manage disease transmission.
Article Synopsis
- Ticks are key vectors for Lyme disease and other tick-borne diseases in Canada, and analyzing tick surveillance data helps identify areas at risk and guide public health efforts.
- The study utilized both passive and active surveillance data from various health authorities and eTick for 2020 to examine seasonal and geographical trends in tick populations and the pathogens they carry.
- Results showed significant tick submissions across provinces, with multiple pathogens identified, providing valuable information to assess the exposure risk to these diseases nationwide.
Analysis of lasalocid residues in grease and fat using liquid chromatography-mass spectrometry.
Food Addit Contam Part A Chem Anal Control Expo Risk Assess
April 2016
A method for the determination of lasalocid, an antibiotic and coccidiostat, in grease and fat is described. The manufacture of lasalocid produces a grease-like residue as a waste byproduct. Recently this byproduct has been shown to have been illegally introduced into the animal feed chain.
View Article and Find Full Text PDFAnalysis of sulfonamides, trimethoprim, fluoroquinolones, quinolones, triphenylmethane dyes and methyltestosterone in fish and shrimp using liquid chromatography-mass spectrometry.
J Chromatogr B Analyt Technol Biomed Life Sci
December 2014
A liquid chromatography-tandem mass spectrometry (LC-MS/MS) screening method is described for the detection and identification of 26 veterinary drugs in fish and other aquaculture products. The analytes include: 13 sulfonamides, trimethoprim, 3 fluoroquinolones, 3 quinolones, 3 triphenylmethane dyes, 2 leuco dye metabolites, and 1 hormone. In this method, tissue is mixed with EDTA-McIlvaine buffer, double-extracted with acetonitrile, p-toluenesulfonic (p-TSA) acid and N,N,N',N'-tetramethyl-p-phenylenediamine dihydrochloride (TMPD), and analyzed using LC-MS/MS.
View Article and Find Full Text PDFHigh resolution mass spectrometry (HRMS) is a valuable tool for the analysis of chemical contaminants in food. Our laboratory has successfully developed methods to screen for veterinary drug residues using liquid chromatography quadrupole time-of-flight (Q-TOF). There have been, however, significant challenges as methods are transferred from the development stage to routine regulatory analysis.
View Article and Find Full Text PDFA liquid chromatography quadrupole time-of-flight (Q-TOF) mass spectrometry method was developed to analyze veterinary drug residues in frog legs and other aquacultured species. Samples were extracted using a procedure based on a method developed for the analysis of fluoroquinolones (FQs) in fish. Briefly, the tissue was extracted with dilute acetic acid and acetonitrile with added sodium chloride.
View Article and Find Full Text PDF