Publications

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[bacterial resistance to antibiotics in québec: study with enterobacteria]. 19694308898
outbreak of salmonella enteritidis phage type 8 in a montreal hotel. 19979401156
[prevalence of infections caused by salmonella spp. in cattle and horses at the veterinary teaching hospital of the faculty of veterinary medicine of the university of montreal].bacteriologic detection of salmonella spp. from feces of animals admitted to veterinary teaching hospital of the faculty of veterinary medicine, university of montréal, in saint-hyacinthe was carried out during a 1-year period to estimate the prevalence of bovine and equine salmonellosis. prevalence at the time of hospitalization was quite low: 1.4% in cattle and 1.7% in horses. incidence was 15.1 cases/100 animal/year in cattle and 38.7 cases/100 animal/year in horses. serotype typhimurium was ...19989752593
salmonella prevalence in crops of ontario and quebec broiler chickens at slaughter.swabs of crop contents of 635 broiler chickens were obtained from 9 ontario and 12 quebec processing plants and cultured for salmonella to determine prevalence in broiler crops. serotypes of positive cultures were determined to evaluate the serotype profile. the overall prevalence of contamination was low (4.3%). prevalence was higher in broilers sampled in quebec (5.8%) than in those sampled in ontario (2.2%). in quebec, there were differences in prevalence among the groups of broilers sampled ...19989776057
distribution of salmonella in swine herds in québec.five porcine finishing units, previously identified as contaminated by salmonella, were sampled to identify possible sources of contamination and to study the distribution of salmonella within the herds. a total of 208 environmental samples were taken and 87 samples (42%) were found contaminated by salmonella spp. salmonella was recovered from several types of samples. among these, fecal material from pens, building environment such as doors, floors, ventilation units, dust and farm accessories ...199910466505
outbreak of salmonella paratyphi b linked to aquariums in the province of quebec, 2000. 200212060955
ceftiofur resistance in salmonella enterica serovar heidelberg from chicken meat and humans, canada.the canadian integrated program for antimicrobial resistance surveillance describes a strong correlation (r = 0.9, p<0.0001) between ceftiofur-resistant salmonella enterica serovar heidelberg isolated from retail chicken and incidence of ceftiofur-resistant salmonella serovar heidelberg infections in humans across canada. in quebec, changes of ceftiofur resistance in chicken salmonella heidelberg and escherichia coli isolates appear related to changing levels of ceftiofur use in hatcheries durin ...201020031042
microbiological quality of blue mussels (mytilus edulis) in nunavik, quebec: a pilot study.this pilot study was aimed at documenting the presence of fecal indicators and enteric pathogens in blue mussels (mytilus edulis) from 6 communities in nunavik, quebec. one to four 2 kg samples of mussels were collected at low tide in each community. samples were investigated by enumeration methods for the fecal indicators enterococci, escherichia coli, f-specific coliphages, clostridium perfringens, and by molecular identification for the pathogens norovirus, salmonella spp., campylobacter jeju ...201021076488
outbreak of salmonella give in the province of quebec.salmonellosis due to salmonella give involving cows, a goat, and an ostrich over a 6-month period was investigated. cases were found in 4 different regions. antimicrobial susceptibility patterns, phagetyping, and pulsed-field gel electrophoresis analyses confirmed that all isolates belonged to the same clone. a common source of infection was suspected.19979426945
antibiotic resistance of shigella spp., salmonella spp., and yersinia spp. isolated in quebec. 19979230531
salmonella infection in wild birds from quebec. 19979187808
effects of environmental factors present in the st. lawrence estuary (quebec, canada) on experimental survival of salmonella salamae as determined by flow cytometry.survival of salmonella salamae in the st. lawrence estuary was studied experimentally during an oceanographic cruise using in situ exposure diffusion chambers. the abundance distribution (colony-forming units) of culturable s. salamae on media was compared with the distribution of cells enumerated by flow cytometry. flow cytometry was also used to characterize the size distribution and dna content of cells exposed to various environmental factors. solar radiation, starvation, and a gradual incre ...19947954106
[salmonella st. paul infection in an institution]. 19665978724
[human salmonellosis in the province of quebec (1967-1972)]. 19744826019
prevalence of salmonella spp., campylobacter spp. and listeria spp. in ring-billed gulls (larus delawarensis).cloacal swabs collected from 264 ring-billed gulls (larus delawarensis) at four sites near montréal, canada were cultured for the presence of salmonella spp., campylobacter spp. and listeria spp. all birds were apparently healthy when captured or killed. of all birds examined, 8.7%, 15.9% and 9.5%, respectively, were infected with salmonella spp., campylobacter spp. and listeria monocytogenes. overall, 29.9% of gulls sampled harbored one or more of these bacteria. gulls probably play only a mino ...19921474648
[a new serotype of salmonella isolated in canada: salmonella quebec (44 1, 44 2:c:e,n,z15)]. 19761277001
canadian integrated program for antimicrobial resistance surveillance (cipars) farm program: results from finisher pig surveillance.in 2006, the canadian integrated program for antimicrobial resistance surveillance (cipars) farm program was implemented in sentinel grower-finisher swine herds in québec, ontario, manitoba, saskatchewan and alberta. herds were visited 1-3 times annually. faecal samples were collected from pens of close-to-market (ctm) weight (>80 kg) pigs and antimicrobial use (amu) data were collected via questionnaires. samples were cultured for generic escherichia coli and salmonella and tested for antimicro ...201021083820
association between potential zoonotic enteric infections in children and environmental risk factors in quebec, 1999-2006.this study was designed to evaluate the association of potential zoonotic gastroenteritis in children, and specifically giardiasis, salmonellosis and campylobacteriosis, with environmental risk factors in rural areas of quebec. notified cases of gastroenteritis in children of 0-4 years of age reported in the period of 1999 through 2006 from municipalities in southern quebec with <100,000 inhabitants were investigated. negative binomial regression models accounting for overdispersion and adjusted ...201020529210
knowledge and attitudes towards food safety among canadian dairy producers.the canadian dairy industry has recently begun implementing an on-farm food-safety (offs) program called canadian quality milk (cqm). for cqm to be effective, producers should be familiar with food-safety hazards in their industry and have an adequate understanding of on-farm good production practices that are necessary to ensure safe food. to assess their knowledge and attitudes towards food safety, a postal questionnaire was administered to all (n=10,474) canadian dairy producers enrolled in d ...201019962773
distribution of sulfonamide resistance genes in escherichia coli and salmonella isolates from swine and chickens at abattoirs in ontario and québec, canada.sulfonamide-resistant escherichia coli and salmonella isolates from pigs and chickens in ontario and québec were screened for sul1, sul2, and sul3 by pcr. each sul gene was distributed differently across populations, with a significant difference between distribution in commensal e. coli and salmonella isolates and sul3 restricted mainly to porcine e. coli isolates.200919633109
prevalence and risk factors for salmonella and campylobacter spp. carcass contamination in broiler chickens slaughtered in quebec, canada.an observational study was conducted to estimate prevalence and risk factors for salmonella and campylobacter spp. carcass contamination in broiler chickens. eighty-two lots were sampled in four slaughterhouses located in the province of québec, canada, over a 10-month period. carcass contamination was evaluated by the carcass rinse technique for about 30 birds per lot. exposure to potential risk factors was evaluated based on data from questionnaires, meteorology, and cecal cultures. multivaria ...200717803137
prevalence and risk factors for salmonella and campylobacter spp. carcass contamination in turkeys slaughtered in quebec, canada.an observational study was conducted to estimate prevalence and risk factors for carcass contamination by salmonella and campylobacter spp. in 60 lots of turkey slaughtered over 10 months in the province of quebec, canada. carcass contamination was evaluated by the carcass rinse technique for about 30 birds per lot. exposure to potential risk factors was evaluated with questionnaires, meteorological data, and cecal cultures. multivariable binomial negative regression models were used for risk fa ...200717612063
prevalence and risk factors for salmonella spp. and campylobacter spp. caecal colonization in broiler chicken and turkey flocks slaughtered in quebec, canada.we conducted an observational study to estimate prevalence and risk factors for salmonella spp. and campylobacter spp. caecal colonization in poultry. eighty-one broiler chicken and 59 turkey flocks selected among flocks slaughtered in the province of quebec, canada, were included in the study. flock status was evaluated by culturing pooled caecal contents from about 30 birds per flock. exposure to potential risk factors was evaluated with a questionnaire. odds ratios were computed using multiva ...200717532069
sporadic infections of salmonella paratyphi b, var. java associated with fish tanks.identify a source of contamination to explain the increase in the number of cases of s. paratyphi b var. java infection.200516350877
yersinia enterocolitica gastroenteritis: a prospective study of clinical, bacteriologic, and epidemiologic features.a prospective study was performed to estimate the frequency of gastroenteritis due to yersinia enterocolitica in montreal children and their families. evidence of bacterial infection was correlated with clinical features and serologic responses. ye was isolated from the stools of 181 (index cases) of 6,364 children with gastroenteritis over a 15-month period; salmonella was isolated from 280 and shigella from 68. median ages were 24, 30, and 41 months, respectively. all but 18 ye isolates were b ...19807350311
knowledge and attitudes toward food safety and use of good production practices among canadian broiler chicken producers.provincial broiler-chicken marketing boards in canada have recently implemented an on-farm food safety program called safe, safer, safest. the purpose of this study was to measure broiler chicken producers' attitudes toward the program and food safety topics and use of highly recommended good production practices (gpp). mailed and web-based questionnaires were administered to all producers registered in british columbia, ontario, and quebec in 2008. the response percentage was 33.2% (642 of 1,93 ...201020615340
association between indicators of livestock farming intensity and hospitalization rate for acute gastroenteritis.to evaluate associations between indicators of livestock farming intensity (manure surplus and livestock density) and acute gastroenteritis hospitalization (agh) rate, we conducted an ecological study on 306 selected agricultural municipalities of quebec. we estimated the agh rate for the period 2000-2004 from the quebec hospital database. multivariate poisson regression was used to estimate the strength of association between the farming indicators and agh with adjustment for confounders. the m ...200919243650
[a study to assess the microbial contamination of mya arenaria clams from the north shore of the st lawrence river estuary, (québec, canada)].the aims of the present study were to assess the microbial quality of mya arenaria clams from the north shore of the st. lawrence river estuary and to validate various microbial indicator microorganisms of bivalve mollusks contamination. clams were collected from nine sites, including four harvesting sites closed by virtue of the canadian shellfish sanitation program (cssp). six contamination indicators (fecal coliforms, somatic coliphages, f-specific coliphages, fecal streptococci, clostridium ...200617110967
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