a serologic survey of pronghorns in alberta and saskatchewan, determine the exposure of free-ranging pronghorns (antilocapra americana ord) to selected pathogens, serum samples were obtained from 33 live-trapped animals from southwestern saskatchewan in 1970, and from 26 and 51 animals from southeastern alberta, in 1971 and 1972, respectively. antibodies were found to the agents of parainfluenza 3, bovine virus diarrhea, eastern and western encephalomyelitis, infectious bovine rhinotracheitis and the chlamydial group. no serologic reactors were found to ...1975167203
tissue pathology and comparative microanatomy of onchocerca from a resident of ontario and other enzootic onchocerca species from canada and the u.s.a.the microanatomy of one male and one female specimen of a zoonotic onchocera sp in a fibrous nodule excised from the wrist of an ontario resident, two bovine onchocerca from saskatchewan and manitoba, canada, and o. cervicalis from the ligamentum nuchae of a horse in georgia, u.s.a., were compared. in dimensions and cuticular morphology, the three canadian specimens of onchocera shared certain features and closely resembled both o. cervicalis and o. gutturosa. the number of cuticular striae in s ...1977596957
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
isolation of st. louis encephalitis and cache valley viruses from saskatchewan mosquitoes. 19734147200
the vitamin a and vitamin e status of horses raised in alberta and saskatchewan.the purpose of the study was to determine normal baseline levels of vitamin a and vitamin e in clinically normal horses under typical field conditions in saskatchewan and alberta. heparinized blood samples were collected from approximately 400 clinically healthy horses selected from 24 locations in alberta and saskatchewan during a two-year period. for each horse, historical information including feed type, vitamin supplementation, time of year, sex, and age were recorded. from each blood sample ...19948050076
descriptive epidemiologic study of disease associated with influenza virus infections during three epidemics in describe 3 epidemics of respiratory tract disease caused by influenza virus infections in a large population of horses.200010687009
risk factors for disease associated with influenza virus infections during three epidemics in identify risk factors associated with respiratory tract disease in horses during 3 epidemics caused by influenza virus infections.200010687010
factors associated with west nile virus disease fatalities in 2003, the occurrence and location of horses with clinical signs of west nile virus infection were identified in the southern portion of saskatchewan with the help of veterinarians, owners, and the regional laboratory. a total of 133 clinical cases were reported between july 30 and september 19, 2003; however, postseason surveillance suggests that the number of cases was underestimated. the case fatality rate was 43.8% (95% ci 35.2, 52.4). factors associated with fatality in clinical cases inc ...200718050794
factors associated with the career path choices of veterinarians in western canada.this second of 2 articles, relating to the veterinary profession in western canada, explores the factors associated with veterinarians' career path choices. among other factors, companion animal (small animal and equine) (ca) practitioners were less likely to have been raised in, or near to, a small center (< or = 10 000), were more concerned with their workload (hours of work and number of nights on-call), and preferred to work in progressive practices. food animal (fa) practitioners were more ...200919721783
public health use of surveillance for west nile virus in horses: saskatchewan, 2003-2005.west nile virus (wnv) infection in horses was first reported in canada in 2001 and in the province of saskatchewan in 2002. this paper outlines the surveillance results of wnv in saskatchewan horses from 2003 to 2005 and describes the usefulness of its inclusion in an integrated surveillance program in saskatchewan. the number of human and horse cases was highest in 2003, the epidemic year and then substantially lower in 2004 and 2005. horses provided additive information about wnv activity in r ...200818761655
a case-control study of factors associated with development of clinical disease due to west nile virus, saskatchewan 2003.west nile virus (wnv) was first diagnosed in saskatchewan equids in 2002. awnv epidemic was considered highly likely for 2003, which would provide a unique opportunity to study all aspects of wnv subclinical infection and clinical disease development in a relatively naive population.200718065306
prevalence of methicillin-resistant staphylococcus aureus colonization in horses in saskatchewan, alberta, and british columbia.this study estimated the prevalence of methicillin resistant staphylococcus aureus (mrsa) in nasal swabs of 458 horses in western canada. the rate of colonization was 1.3% +/- 5.84% [95% confidence interval (ci)], a rate similar to those reported elsewhere. colonization tended to be transient and seemed unrelated to stress or administration of antimicrobials. five of the 6 isolates were canadian epidemic mrsa-5, a human clone that appears to predominate in horses in north america. the other isol ...200920119542
seroprevalence and risk factors for infection with west nile virus in saskatchewan horses, 2003.the primary objectives of this study were to determine the seroprevalence of west nile virus (wnv) infection of horses in saskatchewan in 2003 and to identify risk factors for the infection. blood samples were collected in august and october from 212 horses in 20 herds in 5 geographic zones. after accounting for within-herd clustering, the proportion of horses that had been infected with wnv, as determined by igg and igm antibody response, was 55.7% (95% confidence interval, 44.9% to 65.8%). the ...200717955899
prediction of human cases of west nile virus by equine cases, saskatchewan, canada, 2003, an outbreak of west nile virus (wnv) occurred in saskatchewan, canada from july to september. one-hundred thirty-three horse cases and 947 human cases were recorded and data were analyzed retrospectively for evidence of clustering to determine if clinical infection in the horse population could be used to estimate human risk of infection with wnv. kulldorff's scan statistic was used to identify spatial-temporal clusters in both the human and horse cases. in most areas, human clusters we ...200616806542
clinical west nile virus infection in 2 horses in western canada.two horses had a history of ataxia and weakness or recumbency. one recovered and was diagnosed with west nile virus (wnv) infection by serologic testing. the other was euthanized; it had meningoencephalomyelitis, wnv was detected by polymerase chain reaction. west nile virus infection is an emerging disease. year 2002 is the first year in which cases have been seen in saskatchewan.200415144104
periapical curettage: an alternative surgical approach to infected mandibular cheek teeth in evaluate an alternative surgical method for treating periapical infection of the mandibular cheek teeth of horses.200415104634
suspected white kidney bean (phaseolus vulgaris) toxicity in horses and cattle.thirty-four mixed breed horses from two separate farms showed signs of abdominal discomfort, pyrexia and dehydration after being exposed to a new batch of 14% complete horse feed. a new batch of cattle feed from the same manufacturer resulted in dairy cows showing depression, a drop in milk production and diarrhoea. examination of both diets revealed the presence of white kidney beans (phaseolus vulgaris). inclusion of raw beans of this genus in animal feeds is to be avoided.200315086107
prevalence of antibodies to neospora caninum, sarcocystis neurona, and toxoplasma gondii in wild horses from central wyoming.sarcocystis neurona, neospora caninum, n. hughesi, and toxoplasma gondii are 4 related coccidians considered to be associated with encephalomyelitis in horses. the source of infection for n. hughesi is unknown, whereas opossums, dogs, and cats are the definitive hosts for s. neurona, n. caninum, and t. gondii, respectively. seroprevalence of these coccidians in 276 wild horses from central wyoming outside the known range of the opossum (didelphis virginiana) was determined. antibodies to t. gond ...200314533680
human western equine encephalomyelitis (wee) in saskatchewan. 196514266381
extra-pulmonary rhodococcus equi in a thoroughbred foal. 19968896881
western equine encephalitis virus in saskatchewan garter snakes and leopard frogs.western equine encephalitis virus was isolated from two naturally infected snakes on first bleeding and from seven others at subsequent bleedings, both with and without preliminary chilling. one snake, with neither detectable virus nor serum neutralizing antibodies when first bled, developed viremia later. viremia in garter snakes has a cyclic rhythm independent of the temperature of the environment. virus was isolated from 6 frogs, and 50 out of 179 had detectable serum neutralizing antibodies. ...19665919753
western encephalitis: report of eight fatal cases. saskatchewan epidemic, 1965. 19685688720
ecological factors in the 1963 outbreaks of western encephalitis in saskatchewan. 19664382827
western equine encephalitis in saskatchewan birds and mammals 1962-1963. 19664380749
laboratory studies on the transmission of western equine encephalitis virus by saskatchewan mosquitoes. i. culex tarsalis.a saskatchewan strain of the mosquito culex tarsalis, transmitted a local strain of western equine encephalitis virus from chick to chick, between four and 44 days after an infective blood meal. at incubation temperatures of 69 and 75 degrees f, 120 transmissions occurred out of a possible 141, and all but seven of these were by single infected mosquitoes. at 75 degrees f virus titers in individual mosquitoes were more uniform and transmission was more efficient, than at 69 degrees f, although i ...19724259935
strongylid parasites of horses: experimental ecology of the free-living stages on the canadian prairie.each month for a 1-year period (october through september), equine fecal masses containing eggs of strongylid nematodes were placed outdoors on small grass plots in saskatchewan, canada. thereafter, feces and grass from the plots were sampled after intervals of 1 week or longer, and the strongylid eggs and larvae recovered were counted. these observations were made over a 2-year period. development of eggs to infective larvae occurred in all experiments, except those established in october, dece ...19863752676
the epidemic of foot-and-mouth disease in saskatchewan, canada, 1951-1952.the epidemic of foot-and-mouth disease in saskatchewan in 1951 and 1952 was studied in order to determine origins of outbreaks and methods of spread. the epidemic was initially considered to be vesicular stomatitis and foot-and-mouth disease was not recognized until february 1952, three months after the initial infection. the reports prepared at that time were reviewed in order to obtain details of the numbers of animals infected and the source and date of infection for the outbreaks. methods of ...19902249179
a serological survey of leptospira interrogans serotype pomona in saskatchewan horses.leptospira interrogans serotype pomona antibody titres of 1:100 or greater were detected in 12.8% of 408 adult horses from seven of eight sampled herds in saskatchewan. the geographical distribution of the seropositive horses was widespread throughout the agricultural area of the province. the geographical distribution and the cumulative increase in prevalence with age suggested that serotype pomona is enzootic in the equine population of saskatchewan.1979487358
equine protozoal myeloencephalitis caused by neospora hughesi in an adult horse in saskatchewan.a protozoal parasite identified as neospora hughesi was found in inflammatory lesions in the central nervous system of a canadian-born adult horse presented with neurological signs. this is believed to be the first case of equine protozoal myeloencephalitis (epm) caused by neospora hughesi in a horse outside of the united states.200919881924
clinical impressions of anthrax from the 2006 outbreak in saskatchewan.clinical signs and carcass traits observed during the 2006 saskatchewan anthrax outbreak were largely consistent with those previously published, except for cutaneous anthrax and anthrax mastitis in cows, and subcutaneous edema in bulls and horses. failure of blood to clot was the most reliable indicator of anthrax in carcasses.200919436482
cyathostominosis in a horse from saskatchewan. 200920046613
excessive sulfate and poor water quality as a cause of sudden deaths and an outbreak of diarrhea in horses.sudden deaths and an outbreak of diarrhea in horses occurred in southern saskatchewan in 2006. five horses died while survivors presented with diarrhea and, in 1 case, acute neurologic signs attributed to hyponatremia. diagnostic testing of affected horses and environmental testing suggested poor water quality, specifically high salinity and high sulfate concentration as the cause.201020514251
genetic diversity in a feral horse population from sable island, canada.the present-day sable island horse population, inhabiting an island off the eastern coast of canada, is believed to have originated mainly from horses confiscated from the early french settlers in nova scotia in the latter half of the 18th century. in 1960, the sable island horses were given legal protected status and no human interference has since been allowed. the objective of this study was to characterize the current genetic diversity in sable island horses in comparison to 15 other horse b ...200717855732
further evidence of western encephalitis infection in saskatchewan mammals and birds and in reindeer in northern canada. 19705530913
natural infections of richardson's ground squirrels with western equine encephalomyelitis virus, saskatchewan, canada, 1964-1973.a survey (1964-1973) was conducted on naturally occurring western equine encephalomyelitis (wee) virus infections of richardson's ground squirrels (rgs) in agricultural areas of saskatchewan. the survey included both serology and virus isolation attempts on live-trapped wild squirrels. throughout the study, seropostive squirrels were found in the known enzootic regions of the province each summer. the infections rate was high (11.6% of 250) in the epidemic year of 1965 and low (less than 2% o ...19751148947
epidemiology of equine sarcoids in horses in western canada.sarcoids are the most common tumor of the equine skin but only 1 study describing the epidemiology of sarcoids in canadian horses has been published. the records of 5 veterinary diagnostic laboratories in western canada were searched to identify submissions of sarcoids from horses. the submission records and diagnostic reports of 802 separate submissions of equine sarcoids were reviewed for age, breed, and gender of the horse and the number, location, and clinical type of sarcoid. from these rec ...201021197201
predictive risk mapping of west nile virus (wnv) infection in saskatchewan horses.the objective of this study was to develop a model using equine data from geographically limited surveillance locations to predict risk categories for west nile virus (wnv) infection in horses in all geographic locations across the province of saskatchewan. the province was divided geographically into low-, medium-, or high-risk categories for wnv, based on available serology information from 923 horses obtained through 4 studies of wnv infection in horse populations in saskatchewan. discriminan ...201122210991
antibody against western equine encephalitis virus occurring in the serum of garter snakes (colubridae: thamnophis) in saskatchewan.a study was made of feeding and temperature as factors affecting the appearance of western equine encephalitis (wee) virus-neutralizing serum (vns) antibodies in the serum of garter snakes (thamnophis spp). eighty snakes were collected in the field, held in captivity under controlled conditions, and bled at frequent intervals. the sera were examined by standard procedures for the presence of wee vns-antibodies. it was found that snakes held between 10-28 degrees c showed conversion and intermitt ...19714251413
horse-trading and health insurance: saskatchewan and dominion-provincial relations, 1937-1947. 198611618087
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