Publications

TitleAbstractYear
Filter
PMID
Filter
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
an outbreak of campylobacter enteritis associated with a community water supply.in june 1987, an outbreak of acute enteritis occurred over a period of 2 weeks in a small rural community where the potable water supply is unfiltrated and unchlorinated. campylobacter jejuni was isolated from 6 patients. a case-control study performed in a local fiberglass shop where workers drink a lot of water, showed an association between the occurrence of enteritis and the consumption of 10 or more 8-ounce glasses of water per day (odds ratio = 6, p = 0.04). the attack rate of enteritis wa ...19902207948
susceptibility of clinical isolates of campylobacter jejuni to twenty-five antimicrobial agents.the in-vitro activity of 25 antimicrobial agents against 113 to 161 clinical isolates of campylobacter jejuni was tested by an agar dilution method. all strains were susceptible to the four aminoglycosides tested, to imipenem, chloramphenicol and norfloxacin. one strain (0.6%) was resistant to each of the following antibiotics: nalidixic acid, erythromycin and clindamycin. the frequency of tetracycline, metronidazole and cotrimoxazole resistance among our isolates was 14.5%, 56.4% and 96% respec ...19863493235
antimicrobial resistance of clinical strains of campylobacter jejuni subsp. jejuni isolated from 1985 to 1997 in quebec, canada.the antimicrobial resistance of 158 campylobacter jejuni strains isolated from humans in quebec, canada, from 1995 to 1997 was compared to the resistance of 47 and 86 strains of c. jejuni isolated in 1985 and 1986 and in 1992 and 1993, respectively. of the 291 c. jejuni strains tested, no strain was resistant to erythromycin. compared to the c. jejuni strains isolated in 1985 and 1986, the c. jejuni strains isolated in 1992 and 1993 were more resistant to tetracycline (40.7 versus 19.1%, respect ...19989687415
comparison of smai-defined genotypes of campylobacter jejuni examined by kpni: a population-based study.pulsed-field gel electrophoresis (pfge) was used to analyse 147 isolates collected in two regions of quebec province (estrie and montreal) between march 1998 and feb. 1999, to determine the utility of molecular strain typing for a population-based collection of campylobacter jejuni and to compare directly the discriminatory power of smai and kpni restriction digests. with a combination of epidemiological criteria including space and time plus molecular strain typing, 49% of isolates from estrie ...200111761192
epidemiology and antimicrobial susceptibilities of 111 campylobacter fetus subsp. fetus strains isolated in québec, canada, from 1983 to 2000.the epidemiology and antimicrobial susceptibilities of 111 campylobacter fetus subsp. fetus strains isolated from 103 patients from 1983 to 2000 in québec, canada, were determined. the median number of patients infected annually with this bacteria was seven, with an incidence of 0.1 per 100,000 population. the male-to-female ratio was 1.1 to 1.0. the patients originated from 13 of the 18 québec socioeconomic regions. the age range of the patients was 6 months to 90 years old, 53% being > or = 70 ...200312517895
antimicrobial resistance of campylobacter jejuni subsp. jejuni strains isolated from humans in 1998 to 2001 in montréal, canada.the rates of resistance of 51 to 72 human strains of campylobacter jejuni subsp. jejuni isolated annually from 1998 to 2001 in montréal, québec, canada, varied from 1 to 12% for erythromycin, 43 to 68% for tetracycline, and 10 to 47% for ciprofloxacin. in the last years of the study, there was a significant increase in the rate of resistance to ciprofloxacin (p = 0.00003) but not in the rate of resistance to erythromycin (p = 0.056) or tetracycline (p = 0.095) compared to the rate obtained in th ...200312760892
cluster of erythromycin- and ciprofloxacin-resistant campylobacter jejuni subsp. jejuni from 1999 to 2001 in men who have sex with men, québec, canada.from december 1999 to november 2001, a cluster of multidrug-resistant campylobacter jejuni subsp. jejuni enterocolitis was suspected within the male population of montreal. nine men, aged 26-40 years, presented with an erythromycin- and ciprofloxacin-resistant, tetracycline-susceptible c. jejuni enterocolitis. in march 1998 and february 2000, 2 additional men, aged 23 and 27 years, were infected with an erythromycin-resistant, ciprofloxacin and tetracycline-susceptible c. jejuni. all isolates we ...200312830417
characterization of campylobacter isolates recovered from clinically healthy pigs and from sporadic cases of campylobacteriosis in humans.campylobacter spp. were recovered from 660 (77.6%) of 850 swine cecal contents at the abattoir and from 24 (8.6%) of 278 specimens from sporadic cases of human diarrhea during the same period in the same geographical area. campylobacter coli represented 95.7% of campylobacter isolates recovered from pigs and 8.3% of those isolated from humans. genetic profiles were determined by pulsed-field gel electrophoresis (pfge) using kpni enzyme to characterize the isolates in combination with phenotypic ...200414968951
campylobacteriosis, eastern townships, quebec.independent risk factors for campylobacteriosis (eating raw, rare, or undercooked poultry; consuming raw milk or raw milk products; and eating chicken or turkey in a commercial establishment) account for <50% of cases in quebec. substantial regional and seasonal variations in campylobacteriosis were not correlated with campylobacter in chickens and suggested environmental sources of infection, such as drinking water.200415504275
antimicrobial susceptibilities of thermophilic campylobacter from humans, swine, and chicken broilers.the aim of this study was to evaluate the incidence and the distribution of antimicrobial resistance, and the presence of genetic determinants of resistance, in campylobacter recovered from swine, poultry, and human populations in quebec. minimum inhibitory concentrations (mics) of 10 antimicrobial agents were determined by the agar dilution technique. polymerase chain reaction (pcr) was used to detect the teto determinant, and mutations in gyra were analyzed by sequencing and by mismatch amplif ...200616639939
[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
comparison of antimicrobial resistance of campylobacter jejuni isolated from humans, chickens, raw milk, and environmental water in québec.this study compares the occurrence of antimicrobial resistance to erythromycin, ciprofloxacin, and tetracycline among 384 campylobacter jejuni isolates from humans (245), fresh whole retail chickens (56), raw milk (33), and environmental water (41) collected between 2000 and 2003 in québec, canada. resistance to ciprofloxacin was significantly more frequent in human isolates acquired abroad than in those acquired locally (50 versus 5.9%; p < 0.001); ciprofloxacin resistance was almost absent in ...200717388066
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
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 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
multilocus sequence typing of campylobacter jejuni isolates from humans, chickens, raw milk, and environmental water in quebec, canada.molecular strain typing is essential for deciphering the epidemiology of campylobacter jejuni infections. we applied two different methods, multilocus sequence typing (mlst) and analysis of the flaa short variable repeat (svr), to 289 isolates (163 human, 56 chicken, 34 raw milk, and 36 environmental water isolates) collected in the province of québec, canada, over 3 years; in addition, the analysis included the pulsed-field gel electrophoresis (pfge) typing results for a subset of 131 isolates ...200818701662
thermotolerant coliforms are not a good surrogate for campylobacter spp. in environmental water.this study aimed to assess the importance of quantitatively detecting campylobacter spp. in environmental surface water. the prevalence and the quantity of campylobacter spp., thermotolerant coliforms, and escherichia coli in 2,471 samples collected weekly, over a 2-year period, from 13 rivers and 12 streams in the eastern townships, québec, canada, were determined. overall, 1,071 (43%), 1,481 (60%), and 1,463 (59%) samples were positive for campylobacter spp., thermotolerant coliforms, and e. c ...200919734335
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 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
the reported incidence of campylobacteriosis modelled as a function of earlier temperatures and numbers of cases, montreal, canada, 1990-2006.previous studies have detected an effect of earlier temperatures on the incidence of campylobacteriosis in humans, but without adjustment for earlier numbers of cases of the disease. we estimated the effect of temperature on the number of cases notified by week in montreal, canada, from 1 january 1990 to 26 march 2006, simultaneously with the effect of the numbers of cases notified in the preceding weeks. the current campylobacteriosis count (week 0) was modelled by negative binomial regression, ...201120661596
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
use of amplified-fragment length polymorphism to study the ecology of campylobacter jejuni in environmental water and to predict multi-locus sequence typing clonal complexes.we determined the genetic variability among water isolates of campylobacter jejuni using aflp and mlst. across a highly diverse collection of isolates, aflp clusters did not correlate with mlst clonal complexes, suggesting that alfp is not reliable for deciphering population genetic relationships and may be problematic for larger epidemiologic analyses.201222267674
Displaying items 1 - 23 of 23