an immunoprecipitin study of the incidence of influenza a antibodies in animal sera in the ottawa area.a survey of over 600 'normal' sera from 14 animal species by immunoprecipitin tests in cellulose acetate using viron antigens revealed a high incidence of precipitating activity against a broad range of influenza a virus strains, particularly a2hhong kong/1/68 and /pr8. however, serum treatments trypsin-heat-periodate, naio4, v. cholerae receptor-destroying enzyme (rde), or kaolin eliminated most precipitating activity, which suggests that it was due to "non-specific" inhibitors of influenze vir ...1975167931
history of the researches leading to the discovery of insulin: with an introduction by lloyd g. stevenson. 1978376007
the prevalence of serum antibodies to toxoplasma gondii in ontario mammals.the prevalence of seropositive reactions to toxoplasma gondii was studied in farm animals, companion animals, wild rodents and birds. of the animals tested, 17% of cattle, 65% of sheep, 45% of pigs, 9% of horses, 33% of dogs and 20% of cats were seropositive by the sabin-feldman dye test. in addition 11% of mice (mus musculus), 5% of deer mice (peromyscus), 3% of rats (rattus norvegicus) and less than 2% of sparrows (passer domestcus) were seropositive. all samples from short-tailed field mice ( ...1978667705
serological survey of dogs from toronto for leptospiral antibodies. 1976949675
letter to the editor: a search for heartworm in southern ontario dogs. 19751157000
recent records of ticks, ixodes cookei packard and dermacentor variabilis (say) (acarina: ixodoidea) in southwestern ontario. 19751193021
canine bladder and urethral tumors: a retrospective study of 115 cases (1980-1985).one hundred and fifteen dogs with neoplasms of the lower urinary tract (bladder and/or urethra) were retrospectively evaluated at five referral institutions participating in ongoing studies by the veterinary cooperative oncology group. most tumors were malignant (97%) and of epithelial origin (97%). lower urinary tract tumors were more common in older dogs weighing greater than 10 kg. the following significant (p less than 0.05) statistical associations were found using the university of guelph ...19921619591
review of human and animal cases of coccidioidomycosis diagnosed in canada.the first canadian case of coccidioidomycosis in a human was reported in 1952 and 11 more cases since then. this study provides details of other cases of coccidioidomycosis that have been diagnosed in canada. based on clinical details, isolation of coccidioides immitis, detection of a specific antibody (f band) for coccidioidomycosis by macro- or microimmunodiffusion tests, concurrently used with the complement fixation procedure, and histopathological findings, 116 more cases of this disease we ...19912014046
has ontario's health care system gone to the dogs? 19902302607
report about thoracic research scholarship at toronto with a contribution to the current status of single lung transplantation in this institution and review of the literature.the author was awarded a research scholarship to study the system of single-lung transplantation developed at the reputed toronto general hospital under the leadership of dr. j.d. cooper. in this report he describes in detail the current mode of procurement of the transplant, selection criteria for donor and recipient, the surgical methods and the supporting clinical treatment. introductory to this description is included a concise survey of the historical development of lung-transplantation rep ...19872448907
an epidemiological investigation of pet ownership in south central ontario, canada. 19883232631
genetic polymorphism of mephenytoin metabolism. 19863523505
giardia lamblia in children in day-care centres in southern ontario, canada, and susceptibility of animals to g. 1982, giardia lamblia cysts were found in the faeces of eight of 97 children (two to five years old) in day-care centres in guelph, ontario, canada. none of the infected children showed any of the classical signs of giardiasis. the survey was repeated in 1983 in the kitchner-waterloo area, ontario. in this survey nine of 147 children were infected with g. lamblia. experimentally established giardia-free colonies of mice, hamsters, rats, cats (adults and kittens) and dogs (adults and puppies) ...19863726998
major antigenic groups of rabies virus in canada determined by anti-nucleocapsid monoclonal antibodies.a total of 123 rabies virus isolates from various geographical areas in canada were characterized by a panel of 43 anti-nucleocapsid monoclonal antibodies. four major antigenic groups are found in terrestrial mammals: "canadian arctic" from ontario, quebec and the northwest territories; "south-eastern georgian bay" from ontario; "south mid-central skunk" from alberta, saskatchewan and manitoba; and "brook's, alberta skunk" from a restricted area in alberta. bat isolates can be divided into 4 maj ...19863769442
drug resistance among pathogenic bacteria from animals in ontario.prevalence of antimicrobial drug resistance among over 3000 clinical isolates of animal pathogens in ontario during 1971-72 has been studied. a high number of multiple resistance patterns is prevalent among members of enterobacteriaceae, especially escherichia coli and salmonella typhimurium. the most common resistance pattern among bovine strains was against not less than six drugs in common use. among different animal species the bovine population was found to be the source of a high percentag ...19744277443
philosophy and outlook. 19744606907
parasitisms in domesticated animals in ontario. i. ontario veterinary college records 1965-70. 19734688875
isolation of listeria monocytogenes from brain specimens of domestic animals in ontario. 19715005795
hemoglobin j toronto: alpha 2-5 ala-asp-beta 2. 19715169069
rabies today--man and animals. 19695812488
response of mink, skunk, red fox and raccoon to inoculation with mink virus enteritis, feline panleukopenia and canine parvovirus and prevalence of antibody to parvovirus in wild carnivores in ontario.mink virus enteritis, feline panleukopenia and canine parvovirus-2 were inoculated separately into groups of raccoon, mink, red fox and striped skunk. raccoons were highly susceptible to mink virus enteritis and feline panleukopenia, with animals developing clinical illness, and several dying within six to ten days of inoculation with lesions typical of parvovirus infection. both viruses were shed in high titre in the feces of infected raccoons, and high antibody titres were stimulated. raccoons ...19836309349
intestinal parasites in metropolitan toronto day-care 1981, 900 children (aged 3 months to 10 years) and 146 staff attending 22 day-care centres in metropolitan toronto chosen at random provided a stool specimen in a survey for intestinal parasites. of the children, 4% to 36% were infected in 20 of 22 centres. overall, 19% of the children and 14% of the staff had intestinal parasites: 8.6% and 4.0% respectively had dientamoeba fragilis, and 7.8% and 2.0% respectively had giardia lamblia. the highest prevalence of dientamebiasis was in the 7- to ...19846478361
a serological survey of dogs for brucella canis in southwestern ontario.sera from 2 000 dogs from southwestern ontario were tested for antibodies to brucella canis by a rapid slide agglutination test. the 100 positively reacting sera were tested by tube agglutination and immunoprecipitation (gel diffusion) tests. thirty-one of these sera gave suspicious titres and one a positive titre in the tube agglutination test. six of the rapid slide test positive sera gave positive reactions in immunoprecipitation tests. one dog was identified which was found to have a history ...19807427846
canine streptococcal toxic shock syndrome in ontario: an emerging disease? 19957585432
canine lyme borreliosis in ontario--a case report. 19957585439
isolation of borrelia burgdorferi on mainland ontario. 19957620454
superficial necrolytic dermatitis (hepatocutaneous syndrome) in a dog. 19948044762
an epidemiological investigation of pet ownership in epidemiological study was undertaken to elucidate factors associated with pet ownership. the study utilized questionnaires that were mailed to a systematic random sample of 700 households in the city of guelph and eramosa township. reasons for ownership were analyzed by factor analysis while differences between owning and nonowning households were investigated using logistic regression. sixty-five percent of dogs and 71% of cats were neutered. only 2% of urban and 3% of rural dogs had never b ...19948076276
a prospective clinical study in humans of an endosseous dental implant partially covered with a powder-sintered porous coating: 3- to 4-year results.a dental implant covered partially with a porous coating (endopore) developed at the university of toronto was tested. this new implant is a tapered, truncated-cone endosseous root-form implant fabricated from ti-6al-4v. it utilizes a powder-sintered porous surface geometry over most of its length to promote three-dimensional bone ingrowth and implant stabilization. in this trial, three implants were placed in the anterior mandibles of 52 patients and were used subsequently as free-standing unit ...19968820127
isolation of borrelia burgdorferi--thunder bay district, ontario. 19968840587
will breed-specific legislation reduce dog bites?so how do we deal with biting dogs? to start with, we must remind ourselves that biting is a natural activity of all dogs, and that there is potential for injury. all dog owners must understand this and must be made aware that they are fully responsible for the actions of their dogs. i am not convinced that this is universally understood by dog owners, nor am i satisfied that every dog owner takes the necessary steps to train and socialize their dog. owners need to be encouraged to actively work ...19968853880
streptococcal toxic shock syndrome in determine the clinical, pathologic, and bacteriologic findings in dogs that developed severe invasive infections with group g streptococci (ggs) over a 6-month period in southern ontario.19968870738
evaluation of postoperative complications following elective surgeries of dogs and cats at private practices using computer records.this study was designed to determine the frequency of postoperative complications following elective surgeries (castration, ovariohysterectomy, onychectomy) of dogs and cats from private practices and to evaluate the use of electronic medical records for this type of research. all elective surgeries performed during the study period at 5 private practices were included. the surgical techniques and materials used for each procedure were similar across practices, but the interpretation of "complic ...19968939333
update on canine streptococcal toxic shock syndrome and necrotizing fasciitis. 19979105725
pro canine breed-specific legislation. 19969111689
trichophyton dermatophytosis--a disease easily confused with pemphigus erythematosus.trichophytosis is a rare diagnosis in dogs in ontario, but recently 4 dogs with a scaling and crusting, alopecic, facial dermatitis have been so diagnosed. in all cases, the histopathological findings of severe epidermal and follicular interface dermatitis, accompanied by an acantholytic intraepidermal pustular dermatitis suggested an immune-mediated disease.19979262861
canine toxic-shock syndrome. an emerging disease? 19979331630
retrospective study of toxic metal analyses requested at a veterinary diagnostic toxicology laboratory in ontario (1990-1995).during the 5-year period from january 1, 1990, to december 31, 1995, 887 diagnoses of metal toxicosis in domestic animals and wild birds were documented at the veterinary laboratory services branch of the ontario ministry of agriculture, food and rural affairs. most of these cases involved cattle, sheep, and birds. lead toxicosis was diagnosed in 399 cases, copper toxicosis in 387, zinc toxicosis in 49, mercury toxicosis in 44, iron toxicosis in 4, and selenium in 4 cases. trends in species affe ...19989442951
etiology of acute childhood encephalitis at the hospital for sick children, toronto, 1994-1995.of 145 patients admitted to our hospital because of encephalitis-like illness, 50 patients hospitalized for > or =72 hours underwent standardized microbiological investigations. a confirmed or probable etiologic agent was identified in 20 cases (40%), including mycoplasma pneumoniae (9 cases). m. pneumoniae and enterovirus (2), herpes simplex virus (4), epstein-barr virus (1), human herpes-virus 6 (hhv-6) (1), hhv-6 and influenza virus type a (1), influenza virus type a (1), and powassan virus ( ...19989502462
morbidity and mortality associated with anesthetic management in small animal veterinary practice in ontario.during 1993, 66 small animal practices participated in a prospective study to evaluate the incidence and details of anesthetic-related morbidity and mortality. considering a total of 8,087 dogs and 8,702 cats undergoing anesthesia, the incidences of complications were 2.1% and 1.3%, respectively. death occurred in 0.11% and 0.1% of cases, respectively. logistic regression models were developed and showed that a significant odds ratio (or) of complications in dogs was associated with xylazine (or ...19989657167
leptospirosis in dogs. 199910367164
kidney transplantation in dogs with naturally occurring end-stage renal disease.renal allografts were performed between unrelated donors and 15 dogs with naturally occurring end-stage renal disease. donor selection was based on compatible dog erythrocyte antigen typing and cross-matching. an immunosuppressive protocol consisting of rabbit antidog antithymocyte serum, cyclosporin-a, azathioprine, and prednisone was used to control postoperative rejection of the donated kidney. although seven animals died because of technical failures or rejection episodes, a median survival ...200010914526
predictors of owner response to companion animal death in 177 clients from 14 practices in identify predictors of grief and client desires and needs as they relate to pet death.200011061379
canine heartworm testing in canada: are we being effective?mass testing of dogs in canada for the presence of dirofilaria immitis has been ongoing since 1977. since that time, there have also been changes in the diagnostic tests available to detect the presence of heartworm and changes in the therapy for heartworm, which necessitate a reevaluation of heartworm screening as currently practiced in canada. the principles of evidence-based medicine were used to determine the prevalence of heartworm infection in various dog populations, and the effectiveness ...200011143927
infectious diseases. has leishmaniasis become endemic in the u.s.?believed to be all but absent from united states, the leishmania parasite has infected more than 1000 hunting dogs in 21 u.s. states and the canadian province of ontario. nobody is claiming that the disease is about to run riot among the u.s. population. but the widespread outbreak in dogs has experts wondering whether visceral leishmaniasis--which sickens over half a million people yearly in south america, africa, the mediterranean, and india--has become an endemic disease in north america.200011187042
a survey of knowledge, attitudes, and practices of dog and cat owners with respect to vaccinating their pets against rabies, ottawa-carleton, ontario, july 2000. 200211806310
localized intrinsic staining of teeth due to pulpitis and pulp necrosis in charts and records of 71 dogs were received and 84 intact tooth crowns were noted to have been entirely discolored in shades of pink, purple, grey, or tan. endodontic therapy was performed on 49 of these teeth allowing gross examination of the entire pulp. in exploratory pulpotomy was performed in 15 teeth prior to exodontic therapy in order to assess the integrity of the coronal pulp. gross signs of partial or total pulp necrosis were present in 59 (92.2%) of these teeth. the pulp was no ...200111968908
insulin: discovery and controversy.during the first two decades of the 20th century, several investigators prepared extracts of pancreas that were often successful in lowering blood sugar and reducing glycosuria in test animals. however, they were unable to remove impurities, and toxic reactions prevented its use in humans with diabetes. in the spring of 1921, frederick g. banting, a young ontario orthopedic surgeon, was given laboratory space by j.j.r. macleod, the head of physiology at the university of toronto, to investigate ...200212446492
resurgence of leptospirosis in dogs in ontario: recent findings.a marked increase in leptospirosis in dogs was observed in 2000, part of an increasing trend observed in previous years in ontario. the highest frequency of seropositive cases occurred from september to december 2000, with the peak in november. large breed dogs were particularly affected. clinical and clinicopathological data for 31 dogs admitted between 1998 and 2000 to the ontario veterinary college veterinary teaching hospital were analyzed. major clinical presenting features were acute onset ...200212561690
ecogeographic patterns of rabies in southern ontario based on time series analysis.we describe a method based on time series analysis that divided the rabies enzootic area of southern ontario into 13 regions using data collected at the township level, the smallest available geographical unit for ontario (canada). the intent was to discover ecogeographic patterns if such existed. for the period 1957-89, the quarterly time series of fox rabies cases for each of the 423 townships in the study area was correlated with the time series of its adjacent neighbors. townships were then ...200415362820
e. c. noble in june 1921, and his account of the discovery of insulin.this article concerns the events in toronto during june 1921 that led to the discovery of insulin and the controversy that followed. it draws attention to the hitherto unnoticed participation of e. c. noble in the early lab work on dog 386 between 17 june and 26 june 1921. none of the accounts of the discovery of insulin written by the principal discoverers, frederick banting, charles best, j. b. collip, and j. j. r. macleod, acknowledge noble's participation in the lab. the fact of his particip ...200415591698
impact of giardia vaccination on asymptomatic giardia infections in dogs at a research facility.feces were collected from 107 asymptomatic dogs at a research facility in guelph, ontario. the prevalence of giardia infection was 11% (12/107). to assess the effectiveness of giardia vaccination for treatment of giardia carriage, 9 additional asymptomatic giardia antigen-positive dogs were brought into the facility. the giardia antigen-positive dogs were then randomly allocated to receive either vaccine (n = 10) or a saline placebo (n = 10). feces were then monitored monthly for 6 mo for giardi ...200415600158
risk factors associated with neospora caninum abortion in ontario holstein dairy herds.the objective of this epidemiological study was to identify risk factors for neospora caninum-related abortions in ontario holstein dairy herds. a total of 88 herds, consisting of 5080 cattle, and utilizing dairy herd improvement (dhi) services, were divided into three groups. case (n = 30) and first control (n = 31) herds were selected from 1998 and 1999 fetal abortion submissions to the animal health laboratory, university of guelph, that were histopathologically positive or negative, respecti ...200515710518
an ethicist's commentary on the dog breeder who provides bad husbandry. 200516018559
breed specific legislation: considerations for evaluating its effectiveness and recommandations for alternatives. 200516187720
resurrections in toronto: the emergence of insulin.the discovery of insulin remains the greatest and one of the most controversial events in the history of endocrinology. hypotheses about the possible existence of an internal secretion of the pancreas date from the early 1890s and were steadily modified with the development of the concept of an endocrine system. in the spring of 1922, after many false starts and dead ends, a team of researchers at the university of toronto provided conclusive evidence of the existence of the internal secretion o ...200516286782
prevalence of zoonotic agents in dogs visiting hospitalized people in ontario: implications for infection control.visitation of hospitalized people by dogs is becoming commonplace, but little is known about the potential health risks of introducing dogs to healthcare settings. this cross-sectional study evaluated the prevalence of zoonotic agents in a group of 102 visitation dogs from a variety of sources across ontario. between may and july 2004, owners were interviewed by a standardized questionnaire while dogs underwent a standardized physical examination. one specimen of faeces, hair-coat brushings and ...200616466831
investigation of antimicrobial use and the impact of antimicrobial use guidelines in a small animal veterinary teaching hospital: evaluate patterns of antimicrobial use and the impact of antimicrobial use guidelines at a small animal veterinary teaching hospital.200616478430
investigation of ground level and remote-sensed data for habitat classification and prediction of survival of ixodes scapularis in habitats of southeastern southeastern canada, most populations of ixodes scapularis say, the lyme disease vector, occur in carolinian forests. climate change projections suggest a northward range expansion of i. scapularis this century, but it is unclear whether more northerly habitats are suitable for i. scapularis survival. in this study, we assessed the suitability of woodlands of the lower great lakes/st. lawrence plain region for i. scapularis by comparing tick egg survival in four different woodlands. woodlands ...200616619627
characteristics of programs involving canine visitation of hospitalized people in determine the distribution of canine-visitation programs in ontario and to characterize the nature of the programs the dogs are affiliated with.200616807853
distribution and characterization of borrelia burgdorferi isolates from ixodes scapularis and presence in mammalian hosts in ontario, canada.the blacklegged tick, ixodes scapularis say (acari: ixodidae), has a wide geographical distribution in ontario, canada, with a detected range extending at least as far north as the 50th parallel. our data of 591 adult i. scapularis submissions collected from domestic animals (canines, felines, and equines) and humans during a 10-yr period (1993-2002) discloses a monthly questing activity in ontario that peaks in may and october. the lyme disease spirochete borrelia burgdorferi johnson, schmidt, ...200616892637
behavior, movements, and demographics of rabid raccoons in ontario, canada: management implications.during 1999-2003, 127 cases of raccoon variant rabies were reported in raccoons (procyon lotor) and striped skunks (mephitis mephitis) in ontario, canada. raccoons accounted for 98% (125/127) of the reported cases with behaviors/conditions including aggression, fighting with dogs, ataxia, vocalizations, appearance of being sick, and the presence of porcupine (erethizon dorsatum) quills. seventy-eight percent of the rabid raccoons were adults. juveniles were underrepresented (22%) compared with t ...200617092890
cryptosporidium spp. and other zoonotic enteric parasites in a sample of domestic dogs and cats in the niagara region of determine the prevalence of cryptosporidium spp. and other zoonotic enteric parasites in a sample of domestic dogs and cats in the niagara region, ontario, 5 of 26 clinics invited by mail survey reported their parasitological findings over 24 months. stool samples collected by 1 clinic over 68 days were investigated for parasites by using several techniques (fecal concentration, acid-fast staining, and a cryptosporidium immunoassay). the 5 clinics that provided data indicated toxocara spp. as ...200617217087
the low seroprevalence of tick-transmitted agents of disease in dogs from southern ontario and quebec.infectious diseases caused by pathogens transmitted by ticks and other insect vectors are an important cause of morbidity and mortality in both dogs and humans throughout north america. the purpose of this study was to determine the seroprevalence of selected vector-transmitted pathogens in southern ontario and quebec. samples submitted to the vector borne disease diagnostic laboratory (vbddl) at the north carolina state university college of veterinary medicine were evaluated for antibodies to ...200617217089
neurotoxic cyanobacterium (blue-green alga) toxicosis in ontario. 200717334027
methicillin-resistant staphylococcal colonization in dogs entering a veterinary teaching hospital.nasal, axillary and rectal swabs were collected from 193 dogs admitted to the ontario veterinary college veterinary teaching hospital. enrichment culture was performed and coagulase positive staphylococci were identified via standard methods. methicillin-resistant staphylococcus pseudintermedius was isolated from 4/193 (2.1%) dogs, and methicillin-resistant staphylococcus aureus and methicillin-resistant staphylococcus schleiferi subsp. coagulans were each isolated from 1/193 (0.5%) dogs. methic ...200817643874
screening dogs in ontario for borrelia burgdorferi and ehrlichia canis should be selective rather than routine. 200717824154
canine leptospirosis in canada: a veterinarian's perspective. 200818268264
the occurrence and antimicrobial susceptibility of salmonellae isolated from commercially available canine raw food diets in three canadian cities.the purpose of the present study was to evaluate the prevalence and antimicrobial resistance patterns of salmonella isolated from commercially available canine raw food diets in canada. a total of 166 commercial frozen raw food diet samples were purchased from randomly selected local pet stores in three canadian cities for a period of 8 months. all samples were evaluated for the presence of salmonella, serotyped and tested for antimicrobial susceptibility. there was an overall salmonella prevale ...200818811907
evaluation of the risks of shedding salmonellae and other potential pathogens by therapy dogs fed raw diets in ontario and alberta.dogs that participate in animal-assisted interventions (aais), often called 'therapy dogs', commonly interact with humans whose immune systems are not functioning optimally. the advisability of feeding raw meat (including poultry) to these animals remains a highly contentious issue, in spite of increasing evidence that raw meat is frequently contaminated with salmonella. we set out to determine if consuming raw meat influences the risk of therapy dogs shedding salmonella and other pathogens. two ...200818811908
sentinels of safety: service dogs ensure safety and enhance freedom and well-being for families with autistic children.children with autism might display unpredictable and volatile behavior that places them in considerable physical danger and creates stress for the family. families of autistic children often have limited freedom and experience difficulty with everyday activities. in this qualitative ethology study, we examined the effect of integrating service dogs into ten families with an autistic child. data included participant observation, video recordings of family-parent-dog interaction, and semistructure ...200818955467
seroprevalence of antibodies to canine influenza virus in dogs in ontario.a cross-sectional study evaluating the seroprevalence of antibodies to canine influenza virus in dogs in ontario was performed. the prevalence was 0.4% (1/225), and the only seropositive dog was a greyhound that originated in florida.200818978976
prevalence of intestinal parasites in companion animals in ontario and quebec, canada, during the winter months.veterinarians in ontario and quebec, canada, typically prescribe monthly heartworm prophylactic and anthelmintic medications for use during the warm months of the year. in many patients, the use of dewormers is discontinued during the winter because of the perception that intestinal parasite infections and shedding of nematode eggs are unlikely when the weather is cold and the ground is frozen or covered with snow. this study examined fecal samples obtained from 96 shelter dogs and cats during t ...200819003777
the use of standardized clients in research in the veterinary clinical setting.this article describes the first use of undisclosed standardized clients (scs) for research in the veterinary clinical setting. the study described here used scs to investigate veterinarian-client communication during euthanasia discussions. use of this methodology allowed us to avoid several ethical and logistical challenges associated with gathering observational data on sensitive subject matter. in medicine, standardized patients (sps) are used extensively in teaching, medical school examinat ...200819066360
ectopic thyroid carcinoma causing right ventricular outflow tract obstruction in a dog.a 9-year-old bouvier des flandres was presented with coughing, lethargy, chylous pleural effusion, and a heart murmur. an echocardiogram revealed the presence of an intracardiac mass causing right ventricular outflow tract obstruction. the mass was successfully removed surgically, using total inflow occlusion. histopathology and immunohistochemistry identified the tumor as an ectopic thyroid carcinoma. the dog was euthanized 11 months after diagnosis at the request of the owner because of nonres ...200919411650
incidence of acquisition of methicillin-resistant staphylococcus aureus, clostridium difficile, and other health-care-associated pathogens by dogs that participate in animal-assisted determine whether dogs that visited human health-care facilities were at greater risk of acquiring certain health-care-associated pathogens, compared with dogs performing animal-assisted interventions in other settings, and to identify specific behaviors of dogs associated with an increased risk of acquiring these pathogens.200919480620
re: prevalence of intestinal parasites in companion animals in ontario and quebec, canada, during the winter months. 200919746566
increase in seroprevalence of canine leptospirosis and its risk factors, ontario 1998-2006.canine leptospirosis has been described as having re-emerged in north america around the mid-1990s, with a change in the epidemiology of the infecting serovars responsible for the disease emergence. a retrospective case-control study was conducted to examine the re-emergence of seroprevalent cases of canine leptospirosis in ontario using serology submission records from 1406 dogs from january 1, 1998 to december 31, 2006. the data collected [results of the microscopic agglutination test (mat), v ...200919794888
coagulase positive staphylococcal colonization of humans and their household pets.staphylococcus aureus colonization was identified in 67/242 (28%) humans, 19/132 (14%) dogs, and 7/161 (4.3%) cats in households in ontario, with methicillin-resistant s. aureus present in 8 (3.3%) humans, 2 (1.5%) dogs, and 0 cats. staphylococcus pseudintermedius was isolated from 8 (4.1%) humans, 61 (46%) dogs, and 11 (6.8%) cats, with methicillin-resistant s. pseudintermedius detected in 1 (0.4%) human, 6 (4.5%) dogs, and 2 (1.2%) cats. staphylococcus schleiferi subspecies coagulans was isola ...200919949556
occurrence of antimicrobial resistant bacteria in healthy dogs and cats presented to private veterinary hospitals in southern ontario: a preliminary study.the prevalence and patterns of antimicrobial susceptibility of fecal escherichia coli, salmonella spp., extended beta-lactamase producing e. coli (esbl-e. coli), methicillin-resistant staphylococcus aureus (mrsa), and methicillin-resistant staphylococcus pseudintermedius (mrsp) were determined for healthy dogs (n = 188) and cats (n = 39) from veterinary hospitals in southern ontario that had not had recent exposure to antimicrobials. the prevalence of antimicrobial resistance in e. coli was as f ...200920046603
evaluation of pet-related management factors and the risk of salmonella spp. carriage in pet dogs from volunteer households in ontario (2005-2006).the purpose of this study was to determine pet-related management factors that may be associated with the presence of salmonella spp. in feces of pet dogs from volunteer households. from october 2005 until may 2006, 138 dogs from 84 households in ontario were recruited to participate in a cross-sectional study. five consecutive daily fecal samples were collected from each dog and enrichment culture for salmonella spp. was performed. a higher than expected number of the dogs (23.2%; 32/138) had a ...201120163574
spatial and temporal clustering of calcium oxalate and magnesium ammonium phosphate uroliths in dogs living in ontario, canada between 1998 and 2006.using the spatial scan statistic with a bernoulli model, in a comparison of the two most common canine uroliths, calcium oxalate (caox) and magnesium ammonium phosphate (struvite) we determined whether there was evidence of spatial and/or temporal clustering of each urolith type based on canine submissions from ontario to the canadian veterinary urolith centre (cvuc) between 1998 and 2006. during this period, there were 10,478 canine submissions, excluding cases that were identified as recurrent ...201020359758
sequence type 398 meticillin-resistant staphylococcus aureus infection and colonisation in dogs. 201020581361
risk factors for the incidence of calcium oxalate uroliths or magnesium ammonium phosphate uroliths for dogs in ontario, canada, from 1998 to investigate individual- and community-level contextual variables as risk factors for submission of calcium oxalate (caox) uroliths or magnesium ammonium phosphate (ie, struvite) uroliths for dogs to a national urolith center, as determined on the basis of urolith submission patterns.201020807144
escherichia coli and selected veterinary and zoonotic pathogens isolated from environmental sites in companion animal veterinary hospitals in southern infection control in veterinary medicine is emerging and the role of the environment in hospital-acquired infections (hai) in veterinary hospitals is largely unknown. this study was initiated to determine the recovery of escherichia coli and selected veterinary and zoonotic pathogens from the environments of 101 community veterinary hospitals. the proportion of hospitals with positive environmental swabs were: e. coli--92%, clostridium difficile--58%, methicillin-resistant staphyl ...201021119862
factors related to campylobacter spp. carriage in client-owned dogs visiting veterinary clinics in a region of ontario, canada.summaryfrom july 2008 until may 2009, 240 client-owned pet dogs from seven veterinary clinics in the region of waterloo, ontario, canada participated in a study to determine pet-related management factors that may be associated with the presence of campylobacter spp. in dogs. the prevalence of campylobacter spp. carriage in our study population of pet dogs was 22%, with 19% of the dogs positive for c. upsaliensis, and 3% positive for c. jejuni. a significant risk factor from multivariable logist ...201121208515
comparison of antimicrobial resistance patterns of salmonella spp. and escherichia coli recovered from pet dogs from volunteer households in ontario (2005-06).to compare the antimicrobial resistance (amr) patterns of salmonella spp. and escherichia coli in the faeces of pet dogs from volunteer households in southwestern ontario, canada.201222016151
[In Process Citation]. 201122048909
concurrent splenic and right atrial mass at presentation in dogs with hsa: a retrospective study.the objective of this retrospective study was to evaluate the presence of concurrent splenic and cardiac hemangiosarcoma (hsa). dogs were divided into two groups: group 1 included 23 dogs with splenic hsa, and group 2 included 31 dogs with a cardiac hsa. all dogs were fully assessed for metastasis with thoracic radiography, abdominal and/or cardiac ultrasound, and/or postmortem examination. two dogs (8.7%) in group 1 had a concurrent cardiac mass. neither of these dogs had pericardial effusion, ...201121852509
comparison between cranial thoracic intervertebral disc herniations in german shepherd dogs and other large breed dogs.cranial thoracic intervertebral disc herniations have been reported to be rare in dogs due to the presence of the intercapital ligament, however some studies have proposed they may not be uncommon in german shepherd dogs. the purpose of this retrospective study was to compare cranial thoracic intervertebral disc herniations in german shepherd dogs and other large breed dogs (control group). medical records at the ontario veterinary college were searched for german shepherd dogs and other large b ...201223278950
a cross-sectional study examining the prevalence and risk factors for anti-microbial-resistant generic escherichia coli in domestic dogs that frequent dog parks in three cities in south-western ontario, canada.anti-microbial resistance can threaten health by limiting treatment options and increasing the risk of hospitalization and severity of infection. companion animals can shed anti-microbial-resistant bacteria that may result in the exposure of other dogs and humans to anti-microbial-resistant genes. the prevalence of anti-microbial-resistant generic escherichia coli in the faeces of dogs that visited dog parks in south-western ontario was examined and risk factors for shedding anti-microbial-resis ...201423802858
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