| 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 ... | 1975 | 167931 |
| an outbreak of tyzzer's disease in an ontario rabbitry. | | 1978 | 657076 |
| monitoring wood shaving litter and animal products for polychlorophenols residues, ontario, canada, 1978-1986. | | 1988 | 3130916 |
| current techniques and applications of body composition analysis at toronto general hospital. | | 1988 | 3365164 |
| a possible new enterovirus serotype isolated in ontario. | | 1971 | 4109494 |
| listeria monocytogenes infections in canada. | between 1951 and january 1972 listeriosis was diagnosed bacteriologically in 101 canadian patients. this study adds 80 cases to the 21 reported from metropolitan toronto by sepp and roy in 1963. the laboratory centre for disease control, ottawa, collated epidemiological and clinical data. serotypes of listeria monocytogenes included 4b (53), 1 (15), 1b (6), 1a (2), 2 and 3. clinically, 54 patients had meningitis and 23 septicemia. the mortality rate was 30%.between 1954 and january 1972 listerio ... | 1973 | 4198595 |
| a new intratypic variant of coxsackie b6 virus. | | 1973 | 4199783 |
| viruses of the california encephalitis complex in indicator rabbits. | | 1966 | 4379100 |
| occurrence of echovirus 33 infections in ontario. | | 1968 | 5690127 |
| powassan virus: vernal spread during 1965. | powassan virus was isolated from seven pools of ixodes cookei ticks removed from groundhogs (marmota monax) collected near north bay, ontario, between may and august 1965, including five pools obtained during spring. tick pools, each comprising one to nine ticks, contained 2.0 to 5.5 log(10) tcd(50) of virus upon titration in monolayer cultures of primary swine kidney cells. powassan virus neutralizing antibody prevalence in sera of the current season's groundhogs increased steadily from zero du ... | 1966 | 5904925 |
| listeria monocytogenes infections in canada. | since its first isolation by murray in 1926 listeria monocytogenes has become recognized as a significant pathogen occurring worldwide and involving a wide range of wild and domestic animals including man. the first confirmed human listeriosis case in canada was published by stoot in 1951. a later survey based on records maintained at the laboratory centre for disease control, ottawa showed 101 cases detected over a 21 year period in nine provinces. the overall mortality was 30%. the most freque ... | 1984 | 6442654 |
| pathology and epizootiology of dirofilaria scapiceps (leidy, 1886) (nematoda: filarioidea) in sylvilagus floridanus (j.a. allen) and lepus americanus erxleben. | dirofilaria scapiceps was found between the synovial sheath and tendons, i.e., within the tendon sheath, in the ankle region of eastern cottontail rabbits (sylvilagus floridanus) and snowshoe hares (lepus americanus). in cottontail rabbits, tendons and sheaths appeared normal and all worms were adults. only one (4%) of 24 infected rabbits contained dead worms. all female worms were gravid in rabbits killed in late winter or early spring. microfilaremias in rabbits were high (approximately 30-100 ... | 1984 | 6492321 |
| cercopithifilaria leporinus n. sp. (nematoda: filarioidea) from the snowshoe hare (lepus americanus erxleben) (lagomorpha) in canada. | cercopithifilaria leporinus n. sp. from the subcutaneous tissues of the trunk of snowshoe hares (lepus americanus erxleben) in ontario and alberta, canada, is described. this is the only species of dipetalonema--like filarioid known from lagomorphs. it is distinguished from other species of cercopithifilaria by its small size, numerous mucrons on the female tail, vulva leading into a large, spherical vestibule and the pattern of papillae on the male tail. eight species of filarioids, representin ... | 1983 | 6614747 |
| characteristics of natural infections of the stomach worm, obeliscoides cuniculi (graybill), in lagomorphs and woodchucks in canada. | wild lagomorphs and woodchucks collected predominantly in southern ontario, canada were examined for subspecies of obeliscoides cuniculi (graybill). obeliscoides cuniculi multistriatus was found in snowshoe hares (lepus americanus). obeliscoides cuniculi cuniculi was found in cottontail rabbits (sylvilagus floridanus), european hares (lepus capensis) and woodchucks (marmota monax). prevalence of obeliscoides cuniculi multistriatus in snowshoe hares was 100% and mean intensity (and range of inten ... | 1983 | 6644920 |
| characterization of pasteurella multocida isolated from rabbits in canada. | in a survey for the somatic and capsular serotypes of pasteurella multocida present in domestic rabbits in canada, but mainly in ontario, samples were obtained from research facilities, commercial rabbitries and from abattoir and necropsy specimens. sources of isolates were upper respiratory tract infections, localized bronchopneumonias , acute fibrinous pneumonias, abscesses and otitis media. of 59 isolates obtained, 47.0% were type 12:a, 30.5% 3:d and 12.0% were 3:a. less common types were 12( ... | 1984 | 6722644 |
| spring migratory birds (aves) extend the northern occurrence of blacklegged tick (acari:ixodidae). | birds that had migrated northward across lake superior were captured upon reaching landfall at thunder cape (48 degrees 18' n, 88 degrees 56' w) at the southwestern tip of the sibley peninsula, northwestern ontario, from 9 may to 9 june 1995. twenty-one of 530 birds examined (6 of 55 species) had a total of 34 ticks; 1 blue jay, cyanocitta cristata, had a northern fowl mite, ornithonyssus sylviarum (canestrini & fanzago). four blacklegged tick, ixodes scapularis say, larvae were found on an amer ... | 1996 | 8699451 |
| 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 ... | 2000 | 10914526 |
| prevalence of o1/k1- and o2/k3-reactive actinobacillus suis in healthy and diseased swine. | a cell surface antigen-typing system was devised for the swine pathogen actinobacillus suis and used to examine the prevalence of different lipopolysaccharide (o) types in healthy and diseased pigs. the strains examined in this study were isolated from a variety of locations in canada and from kansas. lipopolysaccharide preparations of 151 isolates of a. suis were characterized by immunoblotting using polyclonal antisera generated to strains so4 (o1/k1), h89-1173 (o2/k3), and vsb 3714, a rough s ... | 2000 | 11015398 |
| 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 ... | 2004 | 15591698 |
| the prevalence of antibodies against toxoplasma gondii in some ontario mammals. | a survey of serum samples from mammals trapped in central ontario showed that many contained antibodies to toxoplasma gondii. the prevalence of infection as reflected by positive reactions in the sabin-feldman dye test appeared to be related to the type of diet of each species examined, and specifically, to the proportion of rodents in the diet. of the fox blood samples tested, 84% were positive. the percentage of positive samples diminished through, coyote, mink, bear, fisher skunk, raccoon, ma ... | 1976 | 16498870 |
| migratory songbirds disperse ticks across canada, and first isolation of the lyme disease spirochete, borrelia burgdorferi, from the avian tick, ixodes auritulus. | during a 3-yr comprehensive study, 196 ixodid ticks (9 species) were collected from 89 passerine birds (32 species) from 25 localities across canada to determine the distribution of avian-associated tick species and endogenous lyme disease spirochetes, borrelia burgdorferi johnson, schmid, hyde, steigerwalt, and brenner. we report the following first records of tick parasitism on avian hosts: the rabbit-associated tick, ixodes dentatus marx, from manitoba and ontario; the mouse tick, ixodes muri ... | 2005 | 17089744 |
| immunochemical studies and genetic background of two neisseria meningitidis isolates expressing unusual capsule polysaccharide antigens with specificities of both serogroup y and w135. | we described 2 unusual neisseria meningitidis strains isolated from epidemiologically unrelated invasive meningococcal disease cases in ontario, canada. both isolates have features typical of serogroup y n. meningitidis: are of serotype 2c, are of the multi-locus sequence types typical of the serogroup y strains in canada, and are genotyped as serogroup y based on a previously described pcr-elisa method that detects the serogroup-y-specific siad gene. however, both strains were poly-agglutinable ... | 2008 | 18388994 |
| tularemia, plague, yersiniosis, and tyzzer's disease in wild rodents and lagomorphs in canada: a review. | information related to infection of wild rodents or lagomorphs in canada by francisella tularensis, yersinia pestis, other yersinia spp., and clostridium piliforme was searched for this study. reports on tularemia in humans linked to these species came from diagnostic databases, literature, wildlife health specialists, and public health agencies. tularemia has been diagnosed in 8 species of wild rodent and 2 species in the genus lepus in canada. tularemia occurred in wild animals, or in humans a ... | 2009 | 20190973 |
| Widespread dispersal of Borrelia burgdorferi-infected ticks collected from songbirds across Canada. | Abstract Millions of Lyme disease vector ticks are dispersed annually by songbirds across Canada, but often overlooked as the source of infection. For clarity on vector distribution, we sampled 481 ticks (12 species and 3 undetermined ticks) from 211 songbirds (42 species/subspecies) nationwide. Using PCR, 52 (29.5%) of 176 Ixodes ticks tested were positive for the Lyme disease spirochete, Borrelia burgdorferi s.l. Immature blacklegged ticks, Ixodes scapularis, collected from infested songbird ... | 2011 | 21864130 |