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q fever pneumonia associated with exposure to wild rabbits.4 patients with atypical pneumonia and a history of exposure to wild rabbits were found to have antibodies to coxiella burnetii but not to the other organisms also commonly associated with atypical pneumonia. 10 (45%) of 22 snowshoe hares caught in the area where 1 of the patients snared his rabbits had antibodies to coxiella burnetii. q fever ought to be included in the differential diagnosis of pneumonia acquired following exposure to wild rabbits.19862868348
seroepidemiology of q fever in nova scotia: evidence for age dependent cohorts and geographical distribution.to determine the incidence of q fever in nova scotia, a randomly selected sample of 492 volunteers aged 18-70 years was recruited by mail from all 18 urban and rural counties in this province. volunteers were followed from 1988 to 1991 for antibody titres to coxiella burnetii antigens. analysis of seroprevalence by age revealed two statistically different cohorts. those younger than 35 years had a low, stable seroprevalence while those 35 years and older had a seroprevalence statistically correl ...19957489773
seroepidemiology of q fever among domestic animals in nova scotia.we used the indirect microimmunofluorescence test to determine the presence of antibodies in sheep, cattle, goat, cat, and dog sera to phase i and ii coxiella burnetii antigens in nova scotia. only 6.7 per cent of the 329 sheep tested had antibodies to phase ii antigen and none had antibodies to phase i. of 29 goats tested, 7 per cent and 3.5 per cent had antibodies to phase ii and phase i antigens, respectively. in contrast, 23.8 per cent of the 214 cattle tested had antibodies to phase ii anti ...19853890569
poker players' pneumonia. an urban outbreak of q fever following exposure to a parturient cat. 19883393197
exposure to parturient cats: a risk factor for acquisition of q fever in maritime canada.over a 34-mo period we studied 51 patients with q fever and 102 control subjects (with various lower-respiratory-tract infections) who were matched for age, sex, and time of onset of infection. by univariate analysis (not adjusted for multiple comparisons), cases differed significantly from controls in the following activities: working on a farm; slaughtering or dressing animals; and contact with cats, cattle, and sheep. the strongest association was with exposure to stillborn kittens--11 of 51 ...19883392409
an outbreak of q fever probably due to contact with a parturient cat.thirty-three cases (24 definite, nine probable) of q fever were diagnosed in victoria county, cape breton, nova scotia from may to august, 1985. twenty-six of the cases occurred in residents of baddeck (population 900, attack rate 2.8 percent), and 21 of the cases occurred during the month of june. there was geographic clustering of the cases: 14 of the 33 (42 percent) lived or worked in four buildings located side by side in the center of town. a case control study revealed that 25 of 29 cases ...19883335174
truckin' pneumonia--an outbreak of q fever in a truck repair plant probably due to aerosols from clothing contaminated by contact with newborn kittens.we describe an outbreak of q fever affecting 16 of 32 employees at a truck repair plant. none of the cases were exposed to cattle, sheep or goats, the traditional reservoirs of q fever. the cases did not work, live on, or visit farms or attend livestock auctions. one of the employees had a cat which gave birth to kittens 2 weeks prior to the first case of q fever in the plant. the cat owner fed the kittens every day before coming to work as the cat would not let the kittens suckle. serum from th ...19892917613
q fever in octogenarians.two of the 186 persons (1%) with acute q fever examined in this study were 80 years of age or older. both were males and both had coxiella burnetti pneumonia. q fever was not suspected during their hospital stay and would not have been diagnosed if these patients had not been part of a prospective study of community-acquired pneumonia.19902378454
complex array of endobionts in petalomonas sphagnophila, a large heterotrophic euglenid protist from sphagnum-dominated peatlands.petalomonas sphagnophila is a poorly studied plastid-lacking euglenid flagellate living in sphagnum-dominated peatlands. here we present a broad-ranging microscopic, molecular and microspectrophotometric analysis of uncultured p. sphagnophila collected from four field locations in nova scotia, canada. consistent with its morphological characteristics, 18s ribosomal dna (rdna) phylogenies indicate that p. sphagnophila is specifically related to petalomonas cantuscygni, the only other petalomonas ...201020376101
ovine-associated q fever.in atlantic canada, the traditional risk factor for acquisition of q fever infection has been exposure to infected parturient cats or newborn kittens. in this study we describe the first case of q fever in nova scotia acquired as a result of direct exposure to sheep. a serosurvey of the associated flock was undertaken using an indirect immunofluorescence assay (ifa) testing for antibodies to phase i and phase ii coxiella burnetii antigens. this serosurvey revealed that 23 of 46 sheep (50%) were ...200918840318
q fever in canada.a canada-wide survey of q fever was begun in 1958 in co-operation with public health and veterinary laboratories to determine the presence and prevalence of the disease so that medical practitioners might be alerted to the potential dangers existing. serologic evidence obtained indicated that the q fever rickettsia now exists in cattle in all provinces of canada except new brunswick, nova scotia, and prince edward island. isolations of the rickettsia were obtained from bovine milk samples from o ...196414175873
seroepidemiology of coxiella burnetii among wildlife in nova scotia.we used an indirect immunofluorescence assay to determine antibody titers to phase i and phase ii coxiella burnetii antigens in serum samples from a variety of wild animals in nova scotia. forty-nine percent of the hares, 16.5% of the moose, 7.1% of the raccoons, and 1.5% of the white-tailed deer tested had antibodies to phase i antigen. we conclude that there is extensive infection of the hare population by c. burnetii, with lesser degrees of infection of the moose, raccoon, and deer population ...19938250101
pneumonia and carcinoma of the lung.in a prospective study of 1269 patients with community-acquired pneumonia, 25 (1.97%) were found to have carcinoma of the lung. in 23 cases, the diagnosis was confirmed histologically. for nine of the 23 patients, this episode of pneumonia was the initial manifestation of carcinoma of the lung. the diagnosis of carcinoma was first suggested by the radiologist as the result of a chest radiograph in five of the nine cases. one patient with bronchoalveolar cell carcinoma presented with rapidly prog ...19947963634
seroepidemiology of q fever in nova scotia and prince edward island.the prevalence of coxiella burnetti infection (q fever) was determined among nova scotia (n.s.) and prince edward island (p.e.i.) blood donors by using the complement fixation and microimmunofluorescence (if) test. the complement fixation and if antibody tests measured antibody prevalence for the phase ii or phase i and ii antigens, respectively. complement-fixing antibodies to phase ii antigen were detected in 4.1% of 997 n.s. and 5.0% of 219 p.e.i. blood donors. anti-phase ii antibodies were d ...19846713300
endocarditis due to q fever in nova scotia: experience with five patients in 1981-1982.q fever endocarditis is rarely reported in north america; only four cases have been documented since 1953. in 1981-1982, five cases were identified in the victoria general hospital, halifax, nova scotia. four patients were from widely separated areas of nova scotia and one was from prince edward island. four patients with long-standing valvular abnormalities, including two with prosthetic valves, presented with recurrent febrile episodes. the fifth patient, who was previously well, had recurrent ...19836655300
the radiographic features of epidemic and sporadic q fever pneumonia.radiographic dissimilarities exist between the chest radiographs of patients with epidemic and sporadically-occurring q fever pneumonia. chest radiographs of 25 patients with q fever pneumonia were retrospectively assessed, and demonstrated previously unreported differences between these two broad groups. differing strains of coxiella burnetii, or varying doses of the pathogen, are postulated as the pathogenetic mechanisms for the observed discrepant findings.19846501384
household outbreak of q-fever pneumonia related to a parturient cat.an outbreak of febrile respiratory disease occurred over 11 days among thirteen adults in nova scotia, all members of an extended family and their friends. signs of illness included bradycardia at the same time as fever, palatal petechiae, and rapidly enlarging bilateral pulmonary infiltrates. ten of the patients had a four-fold rise in antibody to phase-2 q-fever antigen as determined by complement fixation on acute and 4-week-convalescent serum samples. six children of the extended family for ...19846151054
the importance of coxiella burnetii as a cause of pneumonia in nova scotia. 19854052906
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