| demonstration of parvovirus in canadian swine and antigenic relationships with isolates from other countries. | a canadian isolate of porcine parvovirus, isolated from cultured pig thyroid cells, was shown to be antigenically indistinguishable from a british (59e/63) and a german (g10/1) strain when treated by the modified direct complement-fixation, the hemagglutination-inhibition and the fluorescent antibody tests. these tests also revealed that antibodies to parvoviruses were detectable in a large proportion of the conventionally raised pigs in the provinces of quebec and ontario. cell cultures, prepar ... | 1978 | 356941 |
| antigenic variant of swine influenza virus causing proliferative and necrotizing pneumonia in pigs. | a new antigenic variant of swine influenza virus was isolated from the lungs of pigs experiencing respiratory problems in 7 different swine herds in quebec. pigs of different ages were affected, and the main clinical signs were fever, dyspnea, and abdominal respiration. coughing was not a constant finding of the syndrome. at necropsy, macroscopic lesions included the overall appearance of pale animals, general lymphadenopathy, hepatic congestion, and consolidation of the lungs. histopathologic f ... | 1992 | 1333815 |
| outbreaks in quebec pig farms of respiratory and reproductive problems associated with encephalomyocarditis virus. | encephalomyocarditis virus (emcv) was isolated from tissues of aborted fetuses and weaned and suckling piglets from 4 different pig farms in quebec. the farms were experiencing reproductive failure in sows of different parities concomitant to respiratory problems in suckling and postweaning piglets. at necropsy, gross lesions were confined to the lung and consisted of pulmonary congestion and edema of various degrees. lesions of multifocal interstitial to proliferative pneumonia were found in th ... | 1991 | 1662074 |
| quebec's safe working conditions for a safe maternity experience program: survey of consultant physicians and human parvovirus b19 in montreal-centre. | | 2000 | 10986781 |
| comparative serologic and virologic study of commercial swine herds with and without postweaning multisystemic wasting syndrome. | a comparative serologic and virologic study was performed in pigs from 5 herds with postweaning multisystemic wasting syndrome (pmws) and 2 herds without pmws in quebec. in each herd, 60 blood samples were collected at 4-wk intervals from pigs from 3 to 23 wk of age. the serum was evaluated for the presence of antibodies to porcine circovirus type 2 (pcv2) and porcine reproductive and respiratory syndrome virus (prrsv), as well as for the presence of nucleic acid of pcv2, prrsv, an porcine parvo ... | 2003 | 12760476 |
| seroprevalence of parvovirus b19 infection in daycare educators. | this study was undertaken to provide first-time estimates for the seroprevalence of parvovirus b19 infection among daycare educators in montréal, canada, and to identify factors associated with seropositivity. a cross-sectional design was used. directors and educators from 81 daycare centres (dccs) were surveyed about dcc and personal characteristics respectively, and serum samples from 477 female educators were tested for parvovirus b19 igg antibodies. the seroprevalence of parvovirus b19 was 7 ... | 2005 | 15816155 |
| the emergence of porcine circovirus 2b genotype (pcv-2b) in swine in canada. | since late 2004, the swine industry in the province of quebec has experienced a significant increase in death rate related to postweaning multisystemic wasting syndrome (pmws). to explain this phenomenon, 2 hypotheses were formulated: 1) the presence of a 2nd pathogen could be exacerbating the porcine circovirus 2 (pcv-2) infection, or 2) a new and more virulent pcv-2 strain could be infecting swine. in 2005, 13 pmws cases were submitted to the quebec provincial diagnostic laboratory and pcv-2 w ... | 2007 | 17824323 |